U.S. Department of Labor

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U.S. Department of Labor

Administrative Review Board

200 Constitution Ave. NW

Washington, DC 20210-0001

IN THE MATTER OF:

MARK PRINTZ,

COMPLAINANT,

ARB CASE NO. 2022-0045

ALJ CASE NO. 2021-AIR-00013

ALJ SCOTT R. MORRIS

v.

DATE: December 15, 2023

STS AVIATION GROUP,

and

FRONTIER AIRLINES, INC.,

RESPONDENTS.

Appearances:

For the Complainant:

Mark Printz; pro se; Orlando, Florida

For Respondent STS Aviation Group:

Samuel Mogensen, Esq. and John Ho, Esq.; Cozen O’Connor;

Minneapolis, Minnesota and New York, New York

For Respondent Frontier Airlines, Inc.:

Thomas M. L. Metzger, Esq.; Littler Mendelson, P.C.; Columbus, Ohio

Before HARTHILL, Chief Administrative Appeals Judge, and PUST and

WARREN, Administrative Appeals Judges

2

DECISION AND ORDER VACATING IN PART AND REMANDING

HARTHILL, Chief Administrative Appeals Judge:

This case arises under the whistleblower protections of the Wendell H. Ford

Aviation Investment and Reform Act for the 21st Century (AIR21) and its

implementing regulations.1 On May 25, 2022, a United States Department of Labor

(Department) Administrative Law Judge (ALJ) issued a Decision and Order

Denying Relief (D. & O.). The ALJ determined that Complainant Mark Printz’s

(Complainant or Printz) whistleblower claim failed because Complainant failed to

establish by a preponderance of the evidence that his protected activity contributed

in any way to the termination of his employment from Respondent STS Aviation

Group (STS). The ALJ also found that Respondent Frontier Airlines, Inc. (Frontier)

was not Complainant’s employer for purposes of AIR21. Complainant filed a

petition for review with the Administrative Review Board (ARB or Board). For the

reasons explained below, we vacate the ALJ’s dismissal of Complainant’s complaint

and remand for further proceedings consistent with the Board’s opinion.

BACKGROUND

1. Relationship Between the Parties

STS is a third-party aircraft maintenance provider to Frontier, and its

aircraft technicians handle all basic aircraft maintenance activities for Frontier’s

aircraft at the Orlando International Airport (MCO).2 STS’s main office, where

STS’s aircraft maintenance technicians (AMTs) would start and end their workday,

is located off-property from MCO, about a thirty to thirty-five minute drive away.3

49 U.S.C. § 42121, as implemented by the regulations at 29 C.F.R Part 1979 (2023).

In the Consolidated Appropriations Act, 2021 (CAA, 2021), Congress replaced the “air

carrier and contractor and subcontractor” language with “a holder of a certificate under

section 44704 or 44705 of this title, or a contractor, subcontractor, or supplier of such

holder.” The pre-amendment language applies to the events in 2019 that gave rise to

Printz’s claim and therefore we use the term “air carrier” herein. We note, however, that

our statutory analysis in Part I also applies to the amended text.

1

D. & O. at 4, 6-7. On June 24, 2022, the ALJ issued a Corrected Decision and Order

Denying Relief because the prior decision did not contain a complete Notice of Appeal

Rights, which the corrected version did. References to the ALJ’s D. & O. Denying Relief are

to the Corrected D. & O.

2

3

Id. at 14, 26.

3

Under the contract between STS and Frontier, Frontier paid for AMTs’ labor by the

hour.4 STS’s AMTs carried a duty phone while working to receive information and

tasks from Frontier’s Maintenance Control Center (Control Center) located in

Denver.5

Complainant worked for STS as an AMT from December 19, 2016, until the

termination of his employment on June 4, 2019.6 During his entire employment

with STS, Complainant worked exclusively at MCO on Frontier aircraft.7

Complainant received maintenance tasks primarily from Frontier’s Control Center

and he logged into Frontier’s computers daily. 8 Complainant was paid hourly by

STS.9 He was never paid wages by Frontier. 10

Joshua Robbins (Robbins), STS’s top management official at its Orlando

facility, was Complainant’s direct supervisor throughout his employment. 11 Robbins

reported to Ray Strickland (Strickland), STS’s Director of Maintenance and

Southeast Regional Director.12 Strickland tried to visit STS’s operations at MCO

once per quarter.13

Frontier’s Southeast Senior Manager for Regional Line Maintenance, Kevin

Ketterer (Ketterer), was based at MCO. 14 Ketterer had no supervisory function over

STS’s AMTs and did not assign their work. 15 Ketterer primarily interacted with

4

Id. at 7.

5

Id.

6

Id. at 3, 5.

7

Id. at 4.

Id. at 7. During the period of Complainant’s employment, Frontier was STS’s only

customer at MCO. Id. at 26.

8

9

Id. at 7.

10

Id. at 5.

11

Id.

12

Id. at 5, 8.

13

Id. at 11.

14

Id. at 5-6.

15

Id. at 6.

4

STS through Robbins, his counterpart at STS. 16 Frontier had two personnel

stationed at MCO who did assign work to STS’s AMTs: Frontier’s Regional

Maintenance Representatives Tibor Hobler (Hobler) and Carlos Herrera

(Herrera).17 Complainant testified that he received the majority of his work

assignments from Frontier personnel, either through the Frontier computer system,

which AMTs checked daily, or from the two on-site representatives.18

2. STS’s Line Maintenance Employee Break Policy

STS employees were entitled to a thirty-minute unpaid meal break and two

fifteen-minute rest periods each day.19 STS’s policy for meal or rest breaks for line

maintenance employees, including AMTs who worked on Frontier’s aircraft, was

that employees were to take breaks between aircraft maintenance calls, rather than

having a set meal or break time.20

In 2019, AMTs had an outdoor space to take breaks, but also took breaks in

Frontier’s lounge area inside MCO.21 Complainant normally took his breaks in

Frontier’s lounge area, but two months prior to the termination of his employment,

Frontier’s Chief Pilot issued a memorandum which directed that no more than two

STS employees were to be in the Frontier lounge area at the same time performing

company business, and that STS personnel were not to use the lounge area as a

break room.22 A few weeks prior to the termination of Complainant’s employment,

Robbins also informed AMTs that they were not allowed take their breaks in STS’s

trucks with the air conditioning running. 23 After these directives, Complainant

began taking his breaks in the MCO terminal.24

16

Id. at 6, 9.

17

Id. at 7, 9; Hearing Transcript (Tr.) at 223.

18

D. & O. at 7; Tr. at 32.

19

Complainant’s Exhibit (CX) 1 (STS Employee Handbook & Policy Manual) at 9.

20

Id.

21

D. & O. at 7.

22

Id. at 7, 15.

23

Id. at 15.

24

Id. Robbins was unaware that AMTs took breaks in the MCO terminal. Tr. at 234.

5

3. Workplace Discord

On February 24, 2019, Frontier’s Control Center contacted Complainant to

request an AMT to drain fluid from a departing plane’s hydraulic reservoirs. 25

Before performing this work, Complainant asked the flight attendant and the pilots

to remove the passengers and the luggage from the plane.26 According to the flight

crew, Complainant seemed annoyed and immediately gave Frontier personnel

orders that the aircraft needed to be deplaned. 27 Prompted by Complainant’s

interactions with the flight crew on the February 24, 2019 flight, a Frontier pilot

emailed Frontier’s Orlando Base Chief Pilot detailing Complainant’s actions

towards the flight attendants that occurred in front of passengers and explained

that the situation “could have been handled much more differently with some good

communication between [Complainant] and the flight crew.” 28 The Chief Pilot

forwarded the email to Ketterer, who in turn forwarded the message to Robbins

noting that further related reports would follow.29 This was the first time Ketterer

had ever received a complaint about an STS mechanic. 30

On February 27, Ketterer received a second email from the Orlando Base

Chief Pilot, attaching the co-pilot’s description of the February 24 incident.31 After

25

D. & O. at 8.

26

Id. at 9.

27

Id.

Id.; Joint Exhibit (JX) A (Frontier personnel’s February 25, 2019 email to Frontier’s

Orlando Base Chief Pilot) at 1-2 (“[Complainant] popped his head into flight deck and we

told him we needed the hydraulics serviced. He immediately turned to the A [sic] flight

attendant and said we need everybody off the aircraft, and all the bags removed from below,

and in the process made some reference to the coffee pot (which we had also written up). He

then made a statement this [aircraft] would be down 3-6 hours. [The co-pilot] had a

previous bad experience with this particular mechanic, and I asked to speak with him on

the tarmac. We told him that that was not his call to just start talking to [flight assistants]

like that as several passengers heard him in [the] first 3 rows of [the] plane and thought we

were asking them all to get off because of a coffee pot. [I]t was very unprofessional.”).

28

29

D. & O. at 9.

30

Id.

Id. at 9; JX B (Feb. 27 email); RX 5 (co-pilot’s description); see Tr. at 422

(establishing that RX 5 was the attachment to the Feb. 27 email) .

31

6

receiving the second email, Ketterer asked Robbins to talk to Complainant “about

being more approachable – and working as a team.” 32

On March 4, 2019, Hobler emailed Ketterer about an interaction he had with

Complainant after he observed Complainant playing a game on his phone rather

than working.33 Hobler had noticed two of Frontier’s aircraft on the north pad, and

when he inquired about their status, Complainant and another AMT told the

representative that the aircraft were both “good.”34 Hobler later learned from the

next follow-on AMT shift that both aircraft had required a periodic check and one of

the aircraft required troubleshooting of its anti-icing system.35 Hobler advised

Ketterer that both of the aircraft had been at the airport for several hours prior to

the follow-on shift coming on duty.36 Ketterer forwarded this email to Robbins

stating “I just want to pass this along to you. This is now the third time

32

Id. at 9.

Id. Ketterer testified that “at [the] time” he received Hobler’s March 4 email he also

“received some verbal gripes . . . about [Complainant] . . . [about] his lack of . . . motivation

and is [sic] unwillingness to help his team” from Hobler and Herrera. Tr. at 426-27. Herrera

reported to Ketterer that Complainant “pretty much sat in the break room on his phone

most of the time, . . . tended to feel that he was better than the other guys because of his

experience, didn’t go out and help the team very often. [A]cted like a boss or a manager, . . .

didn’t act like on of the . . . equals.” Id. at 427.

33

34

D. & O. at 9.

35

Id. at 9-10.

Id. at 10. Hobler’s email to Ketterer indicated that a “technician was playing a game

on his phone while talking to me, and he seemed to be more preoccupied with his game

than work. After [Complainant] gave me a brief description of his background, he also told

me that he wasn’t sure if he was retiring this summer or not. It seemed as though he

couldn’t care less about anything but putting in his time for the day, then going home. At

least that’s the impression I got.” JX C (Ketterer’s March 4, 2019 email to Robbins) at 1.

Hobler told Ketterer that “[i]t would have been helpful . . . [for] the technicians [to] help

[the third shift] out and take a bit of the workload off of them, instead of sitting around

since N202 arrived at 1755hr and N704 arrived at 1451hr. This is an unacceptable way of

performing line maintenance. Everyone should work as a team, and sharing the workload

throughout the day. It seems as though this is happening too often, where the work gets

past [sic] onto 3rd shift.” Id.

36

7

[Complainant’s] name has come up to me [in] the past couple [of] weeks.”37

On March 6, 2019, Complainant sent an email to Ketterer offering to meet

with him to discuss Frontier’s “problems in Orlando.”38 Ketterer declined to meet,

saying he had a rough idea of their “growing pains” at MCO, which he later testified

he attributed to a lack of technicians. 39 A week later, on March 13, 2019,

Complainant sent a text to Robbins with a picture of one AMT with his shirt

untucked and wearing baggy jeans.40

On April 23, 2019, AMT William Galloway (Galloway) and Hobler, Frontier’s

maintenance representative, were working on a Frontier aircraft because of an

irregularity on the aircraft concerning the hydraulic fluid in the yellow hydraulic

system, known as a hydraulic maintenance event. 41 Following the service, the two

were performing a leak check when Complainant noticed that the pneumatic head

press on the yellow hydraulic system was not returned to its normal position.42

Complainant pointed this out and asked if the two thought they should check the

pump to see if it had overheated or caused cavitation and metal shavings, but both

said Complainant should disregard this mistake and that they would just put the

head press back in position before flight.43

On May 12, 2019, during a shift turnover, Complainant told two other AMTs

who were turning the shift over to him that he did not “give a [expletive]” and that

D. & O. at 10. Robbins testified that in making his decision to recommend

Complainant’s termination, he relied on “information that was provided to me from each of

the Frontier employees and entities, not one in particular. It was a [s ic] accumulation of

each complaint.” Tr. at 244.

37

JX D (Complainant’s March 6, 2019 email to Ketterer, and Ketterer’s March 7, 2019

response to Complainant) at 2.

38

39

Id. at 1; Tr. at 439-40.

D. & O. at 19; Tr. at 47. Complainant testified that he sent the photograph to

Robbins “[j]ust [to] mak[e] sure he was aware of the uniform appearance of some of the

technicians on my crew.” Tr. at 47.

40

41

D. & O. at 10.

42

Id.

43

Id. at 10, 14.

8

he was not going to act as the lead that day. 44 The two AMTs filed complaints with

STS about the incident.45

4. Strickland’s June 2, 2019 Visit to MCO and Complainant’s Protected

Activity

On Tuesday, June 2, 2019, Strickland arrived unannounced at MCO and

brought pizza into the Frontier offices for the STS mechanics while Complainant

was working.46 This was the first time Complainant met Strickland. 47 During

Strickland’s visit, Complainant raised several concerns with him, including

regarding the use of six-foot collapsible ladders, and requested that Strickland

authorize purchase of solid A-frame ladders on wheels.48 After this issue was raised

to him, Strickland texted Robbins asking about the ladders and, after several text

exchanges, Strickland called Robbins. 49 Robbins advised that they did have A-frame

ladders available, but that Complainant chose not to go get them and would grab

whatever was closest instead.50 After their phone call, Strickland had someone take

him to where the ladders were stored and he saw the solid A-frame ladders.51

Later during his visit, Strickland went off property with Complainant to

purchase coffee and pizza for the remaining crews.52 During their drive,

Complainant raised more concerns to Strickland, including the following issues:53

•

AMTs wearing non-compliant safety shoes and safety vests, shirts not always

being tucked in, and Robbins not wearing composite toed shoes while out on

44

Id. at 10-11.

45

Id. at 11.

46

Id.

47

Id.

Id. Complainant testified that the AMTs were comfortable with him speaking to

Strickland on their behalf and asked him to the raise the ladder issue. Tr. at 56.

48

49

D. & O. at 12.

50

Id.

51

Id.

52

Id. at 11.

53

Id.

9

•

•

•

•

•

•

the ramp.54 Complainant advised that he had previously talked to Robbins

about these issues.55

A cracked lower step on STS’s Ford F-350 high-lift truck that was

subsequently removed by STS.56 With the missing step, the first step to the

lift was three and a half feet up from the ground.57

A lack of correct communication methods and location of safety personnel

while an aircraft was being towed to and from the remote north ramp. 58

Contaminated servicing of Frontier-owned passenger and crew oxygen bottles

due to the STS’s oxygen-servicing equipment being left outdoors in the rain in

an unclean environment.59

Contaminated servicing of Frontier aircraft hydraulic fluid as open

containers were being left outdoors and exposed to the environment and

rain.60

The April 23, 2019 hydraulic maintenance event in which Hobler and

Galloway failed to check the pump to see if it overheated or if it caused

cavitation and metal shavings.61

STS storing new serviceable aircraft tires outdoors in an exposed

environment.62 STS’s normal storage area was located in the STS building

(located thirty to thirty-five minutes away from MCO), but STS would also

store tires by outdoor gates.63

54

Id. at 12.

55

Id.

56

Id.

Id. At the time the step was removed, Robbins contacted the manufacturer of the

truck to get a replacement but was informed that the step was not a requirement for the

type of certification of that lift and it was not necessary to replace it. Tr. at 262 -63.

57

58

D. & O. at 12.

Id. at 13. STS replaced the oxygen system at some point after Complainant’s

termination. Id.

59

60

Id.

61

Id. at 10, 13-14.

62

Id. at 14.

Id. After learning of Complainant’s complaint, Robbins checked and found out that

there was a manufacturer requirement that the tires should not be stored in direct

sunlight. Id.

63

10

•

•

STS’s high-lift safety harness for its cherry picker was past its inspection

date.64

STS’s line maintenance workers driving on public roads with unsecured

bottled gas.65

After Strickland’s discussion with Complainant, Strickland called Robbins.66 Their

conversation mainly concerned the ladders; Robbins did not recall any other issues

being discussed.67

5. Ketterer’s Observation of Complainant and Frontier’s Request to STS on

June 3, 2019

On Wednesday, June 3, 2019, Complainant reported to work at 2 p.m., and

proceeded to the Frontier flight line at MCO where AMTs handle all incoming

issues from all inbound and outbound pilots.68 Robbins called Complainant on his

personal cell phone and asked him to work the flight line by himself while two other

AMTs worked on an out-of-service aircraft parked at the remote pad. 69 Throughout

the afternoon, Frontier’s Control Center called Complainant to handle work

requests, which he worked back-to-back until he took his break.70 After the two

other AMTs returned to Frontier’s lounge area to conduct research, and

Complainant finished some paperwork around 6:45 p.m., Complainant told them

that he was going to go upstairs to get a cup of coffee. 71 The last flight before

Complainant took his break left at 6:30 p.m., and the next flight was not scheduled

to arrive until 8:00 p.m., so Complainant decided to take his break upstairs in the

terminal because it had air conditioning.72

64

Id.

65

Id.

66

Id.

67

Tr. at 269.

D. & O. at 15; Tr. at 86, 234. When an AMT works the flight line by him or herself,

the AMT stands by until a pilot raises an issue. Tr. at 84-85.

68

69

D. & O. at 15.

70

Id.

71

Id.; Tr. at 89.

72

D. & O. at 15.

11

After getting coffee, Complainant sat across from the window to the gate

where the next flight was to arrive.73 Unbeknownst to Complainant, Ketterer was

also near the gate and observed Complainant.74 Ketterer did not approach or

identify himself to Complainant.75 After observing Complainant, Ketterer texted

Robbins asking if Frontier was paying for overtime. 76 Ketterer was concerned that

Frontier did not have enough manpower to work the flight line and he knew

Frontier had an out-of-service aircraft that needed to be repaired which required at

least two mechanics.77 Ketterer expected STS’s employees to be “on-call downstairs

in case there w[ere] any issues” given that Frontier paid AMTs on an hourly basis.78

Ketterer testified that he felt that Complainant’s extended time at the terminal

equated to stealing.79

Ketterer texted Robbins that he had been observing Complainant sitting in

the terminal from the time Ketterer arrived at the gate area at 7:15 p.m. until

Ketterer stood up at 8:30 p.m. to catch his 9:00 p.m. flight. 80 As he was leaving,

Ketterer took a photograph of Complainant and sent a text message of the

photograph to Robbins.81 After receiving the text message, Robbins spoke to

Ketterer on the phone, and during this phone conversation, Ketterer asked that

STS remove Complainant from working on Frontier’s aircraft. 82

Around 8:50 p.m., Robbins called Complainant angrily telling him that “he

was tired of hearing his name and that Complainant ‘needed to retire or maybe he

73

Id.

Id. Ketterer was at the airport for the purpose of taking a flight and was not there to

monitor workers. Tr. at 397. This was the second time in about a month that Ketterer

witnessed Complainant in the terminal area. D. & O. at 16; Tr. at 409. Ketterer “was kind

of shocked [] that there was a technician sitting with the passengers in the boarding area”

and he felt it was “pretty unprofessional.” Tr. at 409.

74

75

D. & O. at 15.

76

Id.

77

Id.

78

Id. at 16.

79

Id.

80

Id.

81

Id.

82

Id. at 17.

12

would just take it for me.’” 83 Robbins told Complainant that Ketterer observed him

in the terminal for an extended time.84 Complainant admitted that he was taking a

break and that there were no live flights and “everything was handled.” 85

Complainant told Robbins that he received a phone call at 8:20 p.m. to service an

8:00 p.m. inbound flight, and as soon as it arrived, he serviced a passenger oxygen

mask that needed to be replaced.86 After his phone conversation with Robbins,

Complainant parked aircraft and signed out for the night at midnight. 87

6. Termination of Complainant’s Employment

The next morning, on Thursday, June 4, 2019, Complainant called STS’s

Human Resources (HR) department and reported what Robbins had said to him the

night before.88 Complainant asked if there was any new documentation in his HR

file, and the HR representative advised that there was no adverse information in

his file.89

As soon as Complainant clocked in for his shift at 2:00 p.m. on June 4, 2019,

Robbins called him into his office.90 There were two Frontier representatives

present as witnesses, one of which was Hobler.91 The Frontier representatives did

not say anything during the meeting and Robbins testified that he did not consult

Id. (citations omitted). At the hearing, two of Complainant’s co-workers testified,

including Galloway and Richard Brutt (Brutt). Brutt’s shifts with Complainant overlapped

for about two and one-half hours three or four days a week. Id. at 6 n.10. Brutt thought

Complainant was lazy and testified that Complainant would often disappear and not be

working. Id. Galloway worked the same shift with Complainant and worked approximately

20 hours a week with him. Id. at 6 n.11. Galloway thought Complainant’s work ethic was

up to par, but noted Complainant would disappear during their shifts for several hours by

going upstairs. Id. at 6 n.12.

83

84

Id. at 17.

85

Id.; Tr. at 90.

86

D. & O. at 17; Tr. at 90.

87

D. & O. at 18.

88

Id.

89

Id.

90

Id.

91

Id.

13

them about STS’s decision to terminate Complainant’s employment.92 Robbins

informed Complainant that his employment was terminated due to job performance

issues and “the compilation of Frontier complaints” from January and February

2019 through the May 19, 2019 incident.93 Robbins accused Complainant of hiding

in the terminal the day before and denied Complainant’s request to retrieve and

present his log sheets to show that he was constantly working except for the time he

was getting a cup of coffee.94 Robbins advised that it did not matter and told

Complainant to turn in his badge and work shirts.95 Complainant turned in his

badge and drove home and called an HR representative to ask if she knew anything

about the termination.96 The HR representative recommended that Complainant

reach out to Strickland by text and email, which Complainant did.97 On June 17,

2019, Complainant received a letter confirming the termination of his

employment.98

7. Procedural History and ALJ Decision

On July 1, 2019, Complainant filed an AIR21 whistleblower complaint with

the Department’s Occupational Safety and Health Administration (OSHA). 99

During OSHA’s subsequent investigation, Complainant asked OSHA to terminate

its investigation and make a decision based on the information gathered to that

point.100 On March 3, 2021, OSHA determined it was unable to conclude if there

was cause to believe a violation occurred. 101 Complainant objected to OSHA’s

92

Id.

Id. Robbins explained that Ketterer’s photograph of Complainant was “the final

straw” in deciding to terminate Complainant in consideration of the other complaints from

Frontier that had gathered over the course from January 2019 through May 2019. Id. at 18

n.50.

93

94

Id. at 18.

95

Id.

96

Id.

97

Id. Strickland replied ten days later. Id.

98

Id. at 19.

99

Id. at 2.

100

Id.

101

Id. at 2, 4.

14

findings and requested a formal hearing before the Department’s Office of

Administrative Law Judges.102

On May 25, 2022, after an evidentiary hearing, the ALJ issued a D. & O. in

which he found that Complainant, Frontier, and STS were subject to AIR21, that

Complainant engaged in protected activity, 103 and that Complainant suffered an

adverse action.104 The ALJ further found that Frontier was not Complainant’s

employer for purposes of AIR21, and that Complainant failed to establish that his

protected activity contributed to STS’s adverse action against him. 105

Specifically, the ALJ found that while the temporal proximity between

Complainant’s protected activity and Complainant’s termination could provide

circumstantial evidence of causation, in this case it did not.106 Instead, the ALJ

found that Complainant’s protected activity “played no role whatsoever in STS’s

decision to terminate Complainant’s employment.”107 In finding that Complainant’s

protected activity was not a contributing factor in STS’s decision, the ALJ found

that the basis for “Robbins’s determination to terminate Complainant was

Complainant’s conduct when he was not actually working on Frontier’s aircraft

coupled with the reported poor interactions, not only with other mechanics, but also

with his interactions with Frontier personnel where he had passengers deplane.” 108

The ALJ found the evidence demonstrated that Complainant’s actions garnered the

attention of both Robbins and Ketterer, and that “[t]he focus of Complainant’s

discharge were his interactions with STS’s customer and had nothing to do with

reporting his concerns to” Strickland.109

102

Id.

The ALJ found that three of Complainant’s reports on June 2, 2019, constituted

protected activity: the potentially contaminated oxygen servicing station; the over-servicing

of yellow hydraulic fluid; and the lack of communication during the towing of an aircraft

with the tug. Id. at 33.

103

104

Id. at 33-34.

105

Id. at 27, 36.

106

Id. at 35.

107

Id. at 35-36.

108

Id. at 35.

109

Id.

15

On June 6, 2022, Complainant petitioned the Board to review the ALJ’s

decision.

JURISDICTION AND STANDARD OF REVIEW

The Secretary of Labor has delegated authority to the ARB to hear appeals

from ALJ decisions and to issue agency decisions in cases arising under AIR21. 110 In

AIR21 cases, the Board reviews questions of law presented on appeal de novo, but is

bound by the ALJ’s factual findings if they are supported by substantial evidence. 111

D ISCUSSION

In 2019, AIR21 provided that:

No air carrier, contractor, or subcontractor of an air carrier

may discharge an employee or otherwise discriminate

against an employee with respect to compensation, terms,

conditions, or privileges of employment because the

employee . . . provided . . . to the employer or Federal

Government information relating to any violation or

alleged violation of any order, regulation, or standard of the

Federal Aviation Administration or any other provision of

Federal law relating to air carrier safety . . . .[112]

To prevail in a retaliation case under AIR21, a complainant must prove by a

preponderance of the evidence that they engaged in protected activity and that the

protected activity was a contributing factor in the adverse employment action taken

against them.113 If the complainant meets this burden of proof, the respondent may

avoid liability if it proves by clear and convincing evidence that it would have taken

Secretary’s Order No. 01-2020 (Delegation of Authority and Assignment of

Responsibility to the Administrative Review Board (Secretary’s discretionary review of ARB

decisions)), 85 Fed. Reg. 13186 (Mar. 6, 2020); 29 C.F.R. § 1979.110(a)

110

29 C.F.R. § 1979.110(b); Yates v. Superior Air Charter LLC, ARB No. 2017-0061,

ALJ No. 2015-AIR-00028, slip op. at 4 (ARB Sept. 26, 2019) (citation omitted).

111

112

49 U.S.C. § 42121(a)(1).

49 U.S.C. § 42121(b)(2)(B)(iii); 29 C.F.R. § 1979.109(a); Dolan v. Aero Micronesia,

Inc., ARB Nos. 2020-0006, -0008, ALJ No. 2018-AIR-00032, slip op. at 4 (ARB June 30,

2021) (citation omitted).

113

16

the same unfavorable personnel action in the absence of the complainant’s protected

activity.114

Upon review of the ALJ’s D. & O., the parties’ arguments on appeal, and the

record, the Board concludes that: (1) Frontier is potentially liable under AIR21; and

(2) the ALJ failed to fully analyze and weigh all of the evidence in the record on the

issue of contributing factor as to Complainant’s whistleblower claim.115

1. Frontier Is Potentially Liable for Violations of AIR21’s AntiDiscrimination Clause

In relieving Frontier of potential liability, the ALJ concluded that “there

must be an employer-employee relationship between the air carrier or contractor or

subcontractor employer who allegedly violates the Act and the employee it subjects

to discharge or discrimination.” 116 In determining whether Frontier was an

employer under AIR21, the ALJ first stated that it need not be the employee’s

immediate employer under the common law,117 and then set forth the Board’s test to

determine employer status:

[T]he test as to whether an employer is subject to AIR 21

liability is whether an air carrier or contractor or

49 U.S.C. § 42121(b)(2)(B)(iv); 29 C.F.R. § 1979.109(a); Dolan, ARB Nos. 2020-0006,

-0008, slip op. at 4-5 (citations omitted).

114

Complainant’s petition for review failed to appeal the ALJ’s protected activity

findings, but notwithstanding this omission, his brief to the Board mentions two of his

failed purported claims of protected activity before the ALJ, both of which concern

additional reports Complainant made to Strickland on June 2. As the ALJ found that

Complainant’s other reports to Strickland on June 2 constituted protected activity, it is not

necessary to reach the issue of whether these two other reports also constituted protected

activity.

115

D. & O. at 24. Frontier argues that Complainant failed to appeal the issue of

Frontier’s employer status. Respondent Frontier Response Brief (Br.) Br. at 2. To the

contrary, Complainant raised the issue of Frontier’s direct liability and liability as a

putative joint employer by arguing that “the evidence has established that the adverse

action taken against Mr. Printz was perpetrated by both STS and Frontier” and that “the

companies acted jointly in terminating Mr. Printz's employment.” Complainant’s (Comp.)

Br. at 11 (internal citations omitted) (emphasis added).

116

D. & O. at 24 (citing Fullington v. AVSEC Servs., LLC, ARB No. 2004-0019, ALJ No.

2003-AIR-00030, slip op. at 6 (ARB Oct. 26, 2005)).

117

17

subcontractor of an air carrier exercised control over the

terms, conditions, or privileges of the complainant’s

employment. Such control includes the ability to hire,

transfer, promote, reprimand, or discharge the

complainant, or to influence another employer to take such

actions against a complainant.[118]

To aid in making this determination, the ALJ applied an eight-factor test used by

the Eleventh Circuit, ultimately concluding that Frontier “did not exercise sufficient

control over Complainant to be deemed an employer under the Act.” 119

Direct or joint employer liability is, however, only one basis on which an air

carrier can be liable for the acts of its contractors (or vice versa). In the instant case,

the ALJ did not consider whether the plain text of AIR21’s anti-discrimination

clause does in fact always require an employer-employee relationship.120

A. The Text of AIR21’s Anti-Discrimination Clause Does Not Require an

Employer-Employee Relationship Between the Alleged Retaliator and the

Whistleblower

The language of AIR21’s anti-discrimination clause does not ineluctably

require that an employer-employee relationship exist between Frontier and Printz

before the prohibition against discrimination by an air carrier against “an

employee” can be enforced against Frontier.”121 The starting point for all statutory

Id. at 24 (citing Evans v. Miami Valley Hosp., ARB Nos. 2007-0118, -0121, ALJ No.

2006-AIR-00022, slip op. at 10 (ARB June 30, 2009) (emphasis added)).

118

119

Id. at 27.

In Fullington and Evans, the Board also did not appear to consider either a plain

reading of AIR21’s anti-discrimination clause or the eight-factor test used in the instant

case. In Evans, the facts demonstrated that the air carrier was a joint employer so there

was no need to address direct liability under the plain text of the statute. Evans, ARB Nos.

2007-0118, -0121, slip op. at 9-11. In Fullington, the complainant appears to have raised a

“control test” argument before the ALJ, Fullington v. Sw. Airlines Co., ALJ No. 2003-AIR00030, slip op. at 3 (ALJ Sept. 25, 2003), and the Board focused its analysis of the air

carrier and worker relationship on the definition of “employee.” Fullington, ARB No. 20040019, slip op. at 6-7.

120

121

The parties stipulated that Frontier is an air carrier subject to AIR21. D. & O. at 24.

18

interpretation is the language of the statute itself. 122 We must first “‘determine

whether the language at issue has a plain and unambiguous meaning with regard

to the particular dispute in the case.’” 123 “‘The plainness or ambiguity of statutory

language is determined by reference to the language itself, the specific context in

which that language is used, and the broader context of the statute as a whole.’” 124

The text of the statute provides that “[n]o air carrier or contractor or

subcontractor of an air carrier may discharge an employee or otherwise discriminate

against an employee . . . because the employee [engaged in protected activity].” 125

The statute names the entities who are prohibited from engaging in retaliation: an

air carrier or contractor or subcontractor. 126 The statute identifies the person

protected: an employee. And the statute identifies the prohibited conduct:

discharging or otherwise discriminating against an employee with respect to

compensation, terms, conditions, or privileges of employment. 127

The statute does not define the term “an employee,” thereby creating some

initial ambiguity about whose employees Congress meant to protect. But in context

and under a plain reading of the statute, the meaning is clear: an “employee”

protected by AIR21 is an employee of any of the entities identified in the preceding

part of the sentence, i.e., an air carrier or contractor or subcontractor , even if the

employee does not have a direct employer-employee relationship with the alleged

retaliator. If Congress had intended the term “an employee” to be limited to certain

employees, it easily could have said so. For example, Congress could have added

limiting language, such as “no air carrier or contractor may discharge or

discriminate against its own employee” or “no air carrier may discharge or

Med. Transp. Mgmt. Corp. v. Comm’r of Internal Revenue Serv., 506 F.3d 1364,

1367-68 (11th Cir. 2007), cert. denied, 553 U.S. 1034 (2008) (quoting United States v. DBB,

Inc., 180 F.3d 1277, 1281 (11th Cir. 1999)); see also Edison v. Douberly, 604 F.3d 1307, 1310

(11th Cir. 2010).

122

Med. Transp. Mgmt. Corp., 506 F.3d at 1368 (quoting Robinson v. Shell Oil Co., 519

U.S. 337, 340 (1997)). “Statutory language is ambiguous if it is susceptible to more than one

reasonable interpretation.” Id. (citation omitted).

123

124

Id. (quoting Robinson, 519 U.S. at 341).

125

49 U.S.C. § 42121(a)(1) (emphasis added).

The term “contractor” under Section 42121 is defined at (e) as “a company that

performs safety-sensitive functions by contract for an air carrier.” For brevity, references to

“contractors” in this opinion include subcontractors.

126

127

49 U.S.C. § 42121(a)(1).

19

discriminate against the air carrier’s employee.”128 Congress did neither of these

things. That omission must be presumed intentional. 129 Likewise, we must presume

that Congress deliberately chose to refer to an air carrier or contractor as the

alleged violator, rather than the narrower term “employer.” 130 Thus, under a plain

reading of the statute, AIR21 applies to air carriers who retaliate against their own

employees or the employees of contractors. 131

The right to file a complaint is also not limited to employees of the alleged

violator—“[a] person who believes that he or she has been discharged or otherwise

discriminated against by any person in violation of subsection (a) may” file a

complaint.132 Likewise, the statutory remedies are not confined to the employer of

the affected employee—the Secretary shall order remedies against “the person who

committed such violation.” 133

Cf. 29 U.S.C. § 206(a) (“Every employer shall pay to each of his employees who in any

workweek is engaged in commerce or in the production of goods for commerce, or is

employed in an enterprise engaged in commerce or in the production of goods for commerce,

wages at the following rates . . . “) (emphasis added); id. § 207(a)(1) (“[N]o employer shall

employ any of his employees who in any workweek is engaged in commerce or in the

production of goods for commerce, or is employed in an enterprise engaged in commerce or

in the production of goods for commerce, for a workweek longer than forty hours . . .”)

(emphasis added).

128

See, e.g., Lawson v. FMR LLC, 571 U.S. 429, 441 (2014); Pac. Operators Offshore,

LLP v. Valladolid, 565 U.S. 207, 215-16 (2012).

129

See Lawson, 571 U.S. at 441-42 (“[N]othing in § 1514A’s language confines the class

of employees protected to those of a designated employer.”).

130

Lawson is not to the contrary. Although the Court in Lawson interpreted SarbanesOxley’s protection of “an employee” expansively to mean that a contractor may not retaliate

against its own employees, the Court did not decide the precise issue here: whether the

words “an employee” should conversely be read narrowly to mean that an employer is only

prohibited from retaliating against its own employees. See id. at 441 (“In contrast,

nothing in § 1514A’s language confines the class of employees protected to those of a

designated employer. Absent any textual qualification, we presume the operative language

means what it appears to mean: A contractor may not retaliate against its own employee

for engaging in protected whistleblowing activity.”), 441 n.7 (“We need not decide in this

case whether § 1514A also prohibits a contractor from retaliating against an employee of

one of the other actors governed by the provision.”).

131

132

49 U.S.C. § 42121(b)(1) (emphasis added).

133

Id. § 42121(b)(3)(B) (emphasis added).

20

This plain reading of the statute is supported by the broad regulatory

definition of employee, which does not require an employer relationship between the

employee and the alleged retaliating air carrier:

Employee means an individual presently or formerly

working for an air carrier or contractor or subcontractor of

an air carrier, an individual applying to work for an air

carrier or contractor or subcontractor of an air carrier, or

an individual whose employment could be affected by an air

carrier or contractor or subcontractor of an air carrier. [134]

This application of AIR21 is also consistent with the Secretary’s

interpretation of almost identical language in Section 11(c) of the Occupational

Safety and Health Act of 1970 (OSH Act).135 Section 11(c) provides that “no person”

shall discharge or otherwise discriminate against “any employee” because of OSH

Act protected activity. OSHA’s regulations interpreting that section provide that

“because section 11(c) speaks in terms of any employee, it is also clear that the

29 C.F.R. § 1979.101 (emphasis added). Notably, the first clause of the regulation

also does not limit the definition of protected employees to an air carrier or contractor’s own

employees. We are bound to observe this regulation. See Secretary’s Order No. 01-2020

(Delegation of Authority and Assignment of Responsibility to the Administrative Review

Board), 85 Fed. Reg. 13186 (Mar. 6, 2020).

134

29 U.S.C. § 660(c). Reading AIR21’s whistleblower protection provisions and Section

11(c) in harmony makes sense in this context because facts that would constitute a violation

of either statute often overlap, as recognized by the Secretary in the regulatory scheme. See

29 C.F.R. § 1979.103(e):

135

Relationship [of AIR21 complaints] to section 11(c)

complaints. A complaint filed under AIR21 that alleges facts

which would constitute a violation of section 11(c) of the

Occupational Safety and Health Act, 29 U.S.C. 660(c), shall be

deemed to be a complaint filed under both AIR21 and section

11(c). Similarly, a complaint filed under section 11(c) that

alleges facts that would constitute a violation of AIR21 shall be

deemed to be a complaint filed under both AIR21 and section

11(c). Normal procedures and timeliness requirements for

investigations under the respective laws and regulations will be

followed.

21

employee need not be an employee of the discriminator.” 136

The Secretary and ARB have also similarly applied the plain language of

statutory text under whistleblower statutes with less expansive language than

AIR21.137 In Hill v. Tenn. Valley Auth.,138 the Secretary analyzed Section 5851(a) of

the Energy Reorganization Act (ERA), which provided that ‘[n]o employer may

discharge any employee or otherwise discriminate against any employee . . . .” 139 In

that case, the complainants were employees of QTC, which had a contract with

respondent TVA. The complainants brought an action against TVA when it

significantly restricted the scope of the QTC contract and then refused to

renegotiate the contract, causing the termination of complainants’ employment.

Then-Secretary Dole read the statute to not limit its terms to discharges or

discrimination against any specific employer’s employees or to “his” or “its”

employees. As a result, any “employee” could bring an action against any

“employer,” regardless of the relationship between the two.140 Secretary Dole

specifically stated that the ALJ in that case erred by focusing on a “right-to-control”

test when the statute’s plain language did not require any type of employee employer relationship at all. The Secretary acknowledged that a cause of action

may of course exist when there was a “right-to-control,” but it was not necessary in

light of the language of the statute and the broad purpose and scope of the ERA. 141

In St. Laurent v. Britz, Inc., then-Secretary Martin likewise stated that the

Complainant could pursue his ERA claim against the contractor and licensee even

though they were not his direct employers. Secretary Martin explained:

29 C.F.R. § 1977.5(b). This interpretation is also consistent with the AIR21

regulatory definition of “employee,” which protects former employees and applicants from

retaliation even though there is no employer-employee relationship at the time of the

discrimination. Id. § 1979.101(a).

136

Hill v. Tenn. Valley Auth., Case Nos. 1987-ERA-00023, -00024 (Sec’y May 24, 1989);

St. Laurent v. Britz, Inc., Case No. 1989-ERA-00015 (Sec’y Oct. 26, 1992); Robinson v.

Triconex Corp., ARB No. 2010-0013, ALJ No. 2006-ERA-00031 (ARB Mar. 28, 2012); Nelson

v. Energy Nw., ARB No. 2013-0075, ALJ No. 2012-ERA-00002 (ARB Sept. 30, 2015).

137

138

Hill, Case Nos. 1987-ERA-00023, -00024, slip op. at 2.

42 U.S.C. § 5851(a)(1) (1978); other sections of § 5851 amended by Energy Policy

Act of 2005, Pub. L. No. 109-58, 119 Stat. 594 (codified as 42 U.S.C. § 5851 (2005)).

139

140

Hill, Case Nos. 1987-ERA-00023, -00024, slip op. at 2-6.

141

Id. at 4 & n.2.

22

Jurisdiction here does not depend on a direct employeremployee relationship, but derives from the construction

and application of the statute. Section 5851(a) of the ERA

provides that ‘[n]o employer . . . may discharge any

employee or otherwise discriminate against any employee.

. . . It is not limited in terms to discharges or discrimination

against any specific employer’s employees, and under the

circumstances presented here, where Complainant is a

contract employee whose responsibility includes reporting

safety concerns to the contractor and the licensee, the Act

applies.[142]

The ARB has not always relied on a plain reading of AIR21, the ERA, and

other similar statutes in subsequent cases. Sometimes the Board has focused on the

employer-employee relationship, like the ALJ did in this case,143 and sometimes it

has relied upon the plain text of the statute.144 In Robinson v. Triconex Corp., for

example, the complainant-engineer owned and operated a company, R&R, which

provided services to the respondents.145 The Board, citing to Hill, reiterated that

any employee could bring an action against any employer, and that no employeeemployer relationship had to exist. 146 The same occurred in Nelson v. Energy Nw.,

where the Board held that the control test was not necessary, given the ERA’s

St. Laurent, Case No. 1989-ERA-00015, slip op. at 2 (citing Hill, Case Nos. 1987ERA-00023, -00024, slip op. at 3-5). Secretary Martin further stated that, in light of the

statute’s broad text, it was “not necessary for [her] to consider the applicability of the right

to control and joint employer tests addressed by Respondents and the ALJ.” Id. (citing Hill,

Case Nos. 1987-ERA-00023, -00024, slip op. at 7 n.2).

142

See, e.g., Stephenson v. NASA (Stephenson III), ARB No. 1996-0080, ALJ No. 1994TSC-00005, slip op. at 2 (ARB Apr. 7, 1997) (Environmental Acts); see also Evans, ARB Nos.

2007-0118, -0121 (AIR21); High v. Lockheed Martin Energy Sys., Inc., ARB No. 2003-0026,

ALJ No. 1996-CAA-00008 (ARB Sept. 29, 2004) (ERA); Seetharaman v. Gen. Elec. Co., ARB

No. 2003-0029, ALJ No. 2002-CAA-00021 (ARB May 28, 2004) (Clean Air Act and other

Environmental Acts); Lewis v. Synagro Techs., Inc., ARB Nos. 2002-0072, -0116, ALJ Nos.

2002-CAA-00012, -00014, -00017 (ARB Feb. 27, 2004) (Environmental Acts); Fullington,

ARB No. 2004-0019 (AIR21).

143

Robinson, ARB No. 2010-0013; Nelson, ARB No. 2013-0075. Along the way, the ARB

has articulated variations of a joint employer test, discussed in Part I.B, infra.

144

145

Robinson, ARB No. 2010-0013, slip op. at 2-3.

146

Id. at 7-9.

23

statutory text.147 The Board’s interpretation of the ERA in Hill, Robinson, and

Nelson is even more persuasive when applied to AIR21’s more expansive antidiscrimination clause, which expressly prohibits “air carriers or contractors” from

retaliating, not “employers.”

The legislative history of both AIR21 generally and Section 42121 specifically

provides additional support for this conclusion. Although it is not necessary to rely

on legislative history because the text of the statute is unambiguous, the legislative

history of both AIR21 generally and Section 42121 specifically provides additional

support for this conclusion. AIR21 contained wide ranging reforms to the U.S.

aviation system intended “to ensure that we continue to have the safest, most

efficient aviation system well into the 21st century.” 148 The whistleblower

provisions “must be viewed primarily as a means for achieving AIR21’s greater

aviation safety goals.” 149 Contractor employees, such as Printz, can be an important

source of information regarding air safety. Congress recognized that “[f]light

attendants and other airline employees are in the best position to recognize

breaches in safety regulations and can be the critical link in ensuring safer air

travel.”150 Simply put, an unduly restrictive reading of AIR21’s whistleblower

Nelson, ARB No. 2013-0075, slip op. at 7; see also Kesterson v. Y-12 Nuclear Weapons

Plant, ARB No. 1996-0173, ALJ No. 1995-CAA-00012, slip op. at 2 n.1 (ARB Apr. 8, 1997)

(noting that “a person who discriminates against employees of another employer, for

example, by directing a subcontractor to fire its employees for whistleblowing, is subject to

the provisions of the employee protection laws”) (emphasis added). The applicable laws in

Kesterson were Comprehensive Environmental Response, Compensation, and Liability Act

(CERCLA), Clean Air Act (CAA), Toxic Substances Control Act (TSCA), Solid Waste

Disposal Act (SWDA) and the ERA. Id. at 1.

147

146 Cong. Rec. S1247-07, S1248 (Mar. 8, 2000) (statement of Sen. Gorton); see also

146 Cong. Rec. H1002-01, H1008 (Mar. 15, 2000) (statement of Rep. Boehlert) (“That is our

overarching objective, to maintain an aviation system that continues to be the finest and

safest in the world.”); Cobb v. FedEx Corp. Servs., Inc., ARB No. 2012-0052, ALJ No. 2010AIR-00024, slip op. at 8-13 (ARB Dec. 13, 2013) (interpreting “air carrier” broadly based on

AIR21’s text and legislative history).

148

146 Cong. Rec. S1247-07, S1252 (Mar. 8, 2000) (statement of Sen. Grassley)

(“Whistle-blower protection adds another, much needed, layer of protection for the traveling

public using our Nation’s air transportation system.”); 146 Cong. Rec. S1255 -01, S1257

(daily ed. Mar. 8, 2000) (statement of Sen. Hollings) (AIR21 includes “whistleblower

protection to aid in our safety efforts and protect workers willing to expose safety

problems.”).

149

150

145 Cong. Rec. S2841-02, S2855 (Mar. 17, 1999) (Introductory Statement of Sen.

24

protections that would allow an air carrier to retaliate against a contractor’s

employee for reporting safety concerns, especially about that air carrier’s practices,

would not serve AIR21’s aviation safety goals.

In this case, however, liability does not attach to Frontier under the plain

language of AIR21, because the ALJ found that Frontier (Ketterer) did not know

about Printz’s protected activity.151 The ALJ found that there was no evidence that

Ketterer was aware of Complainant’s protected activity at the time he asked

Robbins to remove Complainant from servicing Frontier’s aircraft. 152 This finding is

supported by substantial evidence. 153

B. Frontier May Alternatively Be Liable as Printz’s Joint Employer

Although relying upon the plain reading of the statute will appropriately

determine air carrier 154 liability in many AIR21 cases, examining joint employer

John Kerry pertaining to the AIR21 legislation).

AIR21 requires that the air carrier retaliated against an employee “because” the

employee engaged in protected activity. 49 U.S.C. § 42121(a).

151

The ARB generally defers to an ALJ’s credibility determinations unless they are

“inherently incredible or patently unreasonable.” Mizusawa v. United Parcel Serv., ARB No.

2011-0009, ALJ No. 2010-AIR-00011, slip op. at 3 (ARB June 15, 2012), aff’d No. 12-9563

(10th Cir. 2013) (quoting Jeter v. Avior Tech. Ops., Inc., ARB No. 2006-0035, ALJ No. 2004AIR-00030, slip op. at 13 (ARB Feb. 29, 2008)). The ALJ specifically found that both

Ketterer and Robbins were credible witnesses, D. & O. at 23, and we find no basis to

disturb those findings.

152

D. & O. at 26 n.57 (“Complainant provided no evidence that Mr. Ketterer had any

knowledge of his safety related complaints.”); see also id. at 35 (“There is little to no

evidence that Mr. Ketterer even knew of the concerns Complainant reported to Mr.

Strickland the day prior when he asked Mr. Robbins to remove Complainant from further

servicing Frontier’s aircraft.”) (citing JX G (Affidavit of Kevin Ketterer)); JX G at 2 (“At no

time did Complainant report any safety-related concerns to me, nor do I have knowledge of

concerns that Complainant may have reported to his employer, STS Line Maintenance.”)).

153

As noted, supra n.1, the CAA, 2021 amendment to AIR21 changed “air carrier”

language from “[n]o air carrier or contractor or subcontractor of an air carrier . . .” to “[a]

holder of a certificate under section 44704 or 44705 of this title, or a contractor,

subcontractor, or supplier of such holder . . .”. 49 U.S.C. § 42121 (2021).

154

25

status is another way that liability can attach to an air carrier or contractor.155

AIR21 does not define “employer” or “joint employer.”156 In the present case, the

ALJ applied the Eleventh Circuit’s “economic realities” test to determine whether

Frontier was Printz’s joint employer. 157 The Eleventh Circuit’s test was developed to

determine joint employer status under the Fair Labor Standards Act (FLSA) and

Liability may also attach when two putative employers constitute a single employer.

This is variously referred to as horizontal joint employment, integrated employer, or a

single employer. This analysis applies where two, separate legal entities are sufficiently

associated that they share control over the employee. Because there is no suggestion in the

instant case that Frontier and STS are anything but separate, disassociated entities, an

integrated employer analysis is not applicable here. See, e.g., Palmer v. W. Truck Manpower

(Palmer I), Case No. 1985-STA-00006, slip op. at 2-3 (Sec’y Jan. 16, 1987) (affirming the

ALJ’s finding that there was “interrelation of operations” over the employee’s employment

between the two employers to qualify as joint employers); see also Myers v.

AMS/Breckenridge/Equity Grp. Leasing 1, ARB No. 2010-0144, ALJ Nos. 2010-STA-00007,

-00008, slip op. at 9 (ARB Aug. 3, 2012) (noting that the test used in Palmer I is used “for

determining whether two [entities are] so interrelated to justify treating them as one

entity.”).

155

Statutory language is ambiguous if it is susceptible to more than one reasonable

interpretation. Med. Transp. Mgmt. Corp., 506 F.3d at 1368; see United States v. Williams,

790 F.3d 1240, 1245 (11th Cir. 2015), cert. denied, 577 U.S. 1111 (2016) (“In the absence of

a statutory definition, this Court must first consider whether the language at issue has a

plain and unambiguous meaning.”).

156

D. & O. at 24-25. The factors under the economic realities test include: (1) the nature

and degree of the putative employer’s control of the workers; (2) the degree of supervision,

direct or indirect, of the work; (3) the right, directly or indirectly, to hire, fire, or modify the

workers’ employment conditions; (4) the power to determine the workers’ pay rates or

methods of payment; (5) the preparation of payroll and payment of workers’ wages; (6) the

ownership of facilities where the work occurred; (7) whether the worker performed a line

job integral to the end product; and (8) the relative investment in equipment and facilities.

Antenor v. D & S Farms, 88 F.3d 925, 932 (11th Cir. 1996). Any appeal in the instant case

would likely be to the Eleventh Circuit. See 49 U.S.C. § 42121(b)(4)(A) (stating that review

of agency order may be brought in the circuit in which the violation allegedly occurred or

the circuit in which the complainant resided on the date of such violation). The ALJ also

relied on Fullington, ARB No. 2004-0019, and Evans, ARB Nos. 2007-0118, -0121. As

explained, infra, however, these decisions set forth an unduly narrow joint employer test.

157

26

Migrant and Seasonal Workers’ Protection Act (MSPA). 158 Although the FLSA and

MSPA provisions and definitions do not exactly align with AIR21’s antidiscrimination text, we agree that the economic realities test developed under those

worker protection statutes is instructive in the instant case and in AIR21 cases

generally, as clarified below.159

In Layton v. DHL Express (USA), Inc.,160 the court explained that the

existence of “a joint employment relationship depends on the economic reality of all

the circumstances” and the eight “factors are used because they are indicators of

economic dependence.”161 “They are aids—tools to be used to gauge the degree of

dependence of alleged employees on the business to which they are connected . . . .

Thus, the weight of each factor depends on the light it sheds on the []workers’

economic dependence (or lack thereof) on the alleged employer, which in turn

depends on the facts of the case.” 162 Further, “a joint employment relationship is not

determined by a mathematical formula . . . . The purpose of weighing the factors is

D. & O. at 25 (citing Layton v. DHL Express (USA), Inc., 686 F.3d 1172 (11th Cir.

2012) (FLSA); Cornell v. CF Ctr., LLC, 410 F. App’x 265, 268 (11th Cir. 2011) (citing

Antenor, 88 F.3d 925) (FLSA); Likes v. DHL Express (USA), Inc., No. 2:08–cv–00428–AKK,

2012 WL 8499732 (N.D. Ala. 2010) (FLSA); Woldu v. Hotel Equities, Inc., No. 1:09-cv-0685HTW-CCH, 2009 WL 10668443 (N.D. Ga. 2009) (Section 1981) ).

158

Admin., Wage & Hour Div., U.S. Dep’t of Lab. v. Halsey, ARB No. 2004-0061, ALJ

No. 2003-CLA-00005, slip op. at 8 (ARB Sept. 29, 2005), aff’d No. 3:06-cv-00205 JWS, 2007

WL 4106268 (D. Alaska 2007) (‘“Employees’ for purposes of the FLSA are those who as a

matter of economic reality are dependent upon the business to which they render service.”);

Admin., Wage & Hour Div., U.S. Dep’t of Lab. v. Elderkin, ARB Nos. 1999-0033, -0048, ALJ

No. 1995-CLA-00031, slip op. at 8-9 (ARB June 30, 2000) (“In order to determine whether

[the worker] was an [employee or] independent contractor, we look to the “economic reality”

of his relationship with Elderkin.”) (FLSA); Reich v. Baystate Alt. Staffing, Inc., ARB No.

1994-FLS-00022, slip op. at 3 (ARB Dec. 19, 1996), aff’d in part and rev’d in part sub nom.

Baystate Alt. Staffing v. Herman, 163 F.3d 668 (1st Cir. 1998) (“[T]he ultimate issue is

whether as a matter of ‘economic reality’ the particular worker is an employee of the

business or organization in question.”) (overtime compensation provisions of the FLSA);

Echaveste v. Horizon Publishers & Distribs., Case No. 1990-CLA-00029, slip op. at 4-5

(Sec’y May 11, 1994) (affirming the ALJ’s use of FLSA’s economic realities test to determine

whether the children-employees were subject to FLSA’s protections against oppressive child

labor).

159

160

686 F.3d 1172 (11th Cir. 2012).

161

Id. at 1177 (quoting Antenor, 88 F.3d at 932-33 (emphasis added)).

162

Id. (quoting Antenor, 88 F.3d at 932-33) (brackets in original).

27

not to place each in either the contractor or the [alleged employer's] column, but to

view them qualitatively to assess the evidence of economic dependence, which may

point to both.”163 Finally, the Layton court instructed, “in considering a jointemployment relationship, we must not allow common-law concepts of employment

to distract our focus from economic dependency.”164

These principles are equally applicable when assessing joint employer status

under AIR21.165 The broad language of the anti-discrimination provision, the

legislative purpose, and the regulatory definition of “employee” all point to

Congressional concern with protecting whistleblowers whose employment is affected

by an air carrier or contractor.166 We therefore conclude that determination of joint

employer status under AIR21’s anti-discrimination provision is more properly

aligned with the economic realities test than with a narrow control test.

Although the ALJ recognized this as the proper approach, in applying the

Eleventh Circuit’s eight-factors, he did not qualitatively assess whether Printz was

economically dependent on Frontier. Indeed, the ALJ elevated Frontier’s power to

control over other factors. This is understandable given the Board’s apparent focus

163

Id. at 1178 (quoting Antenor, 88 F.3d at 932-33) (brackets in original).

164

Id. (citing Antenor, 88 F.3d at 932-33).

If upon examination we find statutory text to be ambiguous, including when the

ambiguity is caused by the absence of a statutory definition, we look to traditional canons of

statutory construction, context, and legislative history, to resolve the ambiguity. See

Williams, 790 F.3d at 1245; Palmer v. Canadian Nat’l Ry., ARB No. 2016-0035, ALJ No.

2014-FRS-00154, slip op. at 80 (ARB Sept. 30, 2016), reissued with full dissent, Jan. 4, 2017

(Royce, J., concurring, in part, and dissenting, in part) (“When statutory provisions are

unclear, we necessarily turn to other means of statutory construction, including legislative

history and other statutes, as interpretive tools.”) (citing Spinner v. Landau & Assocs.,

LLC, ARB Nos. 2010-0111, -0115, ALJ No. 2010-SOX-00029, slip op. at 9-16 (ARB May 31,

2012) (in which the Board used different interpretative tools, including textual analysis, the

use of certain words in the statute’s title, review of other statutes, and legislative history,

when the relevant statutory provision was unclear and resulted in ambiguity) ).

165

See supra, Part 1.A. Cf. 29 C.F.R. § 1977.5(a) (“All employees are afforded the full

protection of [OSH Act] section 11(c) . . . The Act does not define the term “employ.”

However, the broad remedial nature of this legislation demonstrates a clear congressional

intent that the existence of an employment relationship, for purposes of section 11(c), is to

be based upon economic realities rather than upon common law doctrines and concepts.”);

see also 29 C.F.R. § 1979.103(e) (recognizing factual overlap and relationship between

AIR21 and Section 11(c) complaints).

166

28

on control under the particular facts in Fullington and Evans. To be sure, whether

the entity has the power to control the work to be performed or power to control

employment conditions is relevant. Control over the power to hire and fire and set

wages, however, should not be elevated over other factors, such as whethe r the

individual’s work is an integral part of the air carrier’s business, 167 or whether the

work is performed in the putative employer’s facilities.168

In sum, whether to rely on the plain text of AIR21’s antidiscrimination

provision or apply the joint employer test to determine air carrier or contractor

liability depends on the particular facts and circumstances of each case. In the vast

run of AIR21 cases, there should be no need to analyze joint employer status, but

where appropriate,169 the focus of the analysis should be on the economic realities of

See, e.g., Cobb, ARB No. 2012-0052, slip op. at 8-13 (reviewing AIR21 statutory text

and legislative history to determine a contractor was also an “air carrier” within the preCAA, 2021 amendment definition because its services were integral to the air services of an

air carrier).

167

29 C.F.R. § 1979.101 references “an individual whose employment could be affected

by an air carrier or contractor or subcontractor of an air carrier.” (emphasis added). An air

carrier could affect an individual’s employment by interfering with the employment

relationship without exercising or retaining any traditional indicia of control over the

employment terms and conditions. This is illustrated by the facts of the instant case.

Frontier could (and apparently did) “affect” Printz’s employment with a phone call

requiring STS to remove him from working on Frontier’s airplanes. D. & O. at 35-36

(finding that the focus of Complainant’s discharge was his actions and inactions while

working that garnered Ketterer’s attention enough to ultimately ask “Robbins to remove

Complainant from further servicing Frontier’s aircraft.”).

168

While we cannot predict every set of facts where the joint employer analysis might

be the appropriate analytical framework, this case may present an example of such. Under

a plain reading of the statute, Frontier would not be liable because the ALJ found that

Frontier lacked knowledge of Printz’s protected activity. See Part I.A, supra. However, joint

or integrated employers may be liable even if they did not knowingly participate in the

alleged illegal conduct. See Palmer v. W. Truck Manpower (Palmer III), Case No. 1985-STA00016 (Sec’y Mar. 13, 1992) (holding that knowing participation not required for joint

employer to be vicariously liable); Jones v. Consol. Pers. Corp., ARB No. 1997-0009, ALJ No.

1996-STA-00001 (ARB Jan. 13, 1997) (acknowledging the Secretary’s holding in Palmer

that under the employee protection provision of the STAA, a joint employer may be held

vicariously liable, even in the absence of knowing participation, for the discriminatory act of

another); Cook v. Guardian Lubricants, Inc., Case No. 1995-STA-00042 (Sec’y May 1, 1996)

(same). But see Logan v. B H 92 Trucking, Inc., No. 19-cv-1875, 2022 WL 198806, at *7-8

(N.D. Ill. 2022) (in a STAA case, finding joint employer was not liable for co-employer’s

169

29

the complainant’s dependence on the putative employer. This includes consideration

of whether the putative employer had the authority or power to affect the

employment of the Complainant as one factor, but it should not be the dominant

factor. In this case, because the ALJ did not qualitatively apply all the factors to

assess Printz’s economic dependency on Frontier, we remand to the ALJ to do so.170

2. The ALJ’s Contributing Factor Analysis Does Not Demonstrate that the

ALJ Considered or Weighed All the Evidence in the Record

Complainant has the burden to prove, by a preponderance of the evidence,

that his protected activity was a contributing factor to the employer’s adverse

action.171 “A ‘contributing factor’ includes ‘any factor, which alone or in connection

with other factors, tends to affect in any way the outcome of the decision.’”172

conduct where complainant did not offer any evidence that it either participated in the

violative conduct or failed to take corrective measures within its control); Myers, ARB No.

2010-0144, slip op. at 12-14 (Cooper-Brown, J., concurring) (distinguishing between liability

for vertical joint employers (joint employer knew or should have known of other employer’s

illegal action) and integrated enterprise test (non-acting employer may be vicariously liable

notwithstanding lack of knowing participation in the retaliatory action)); but cf. Whitaker v.

Milwaukee Cnty., 772 F.3d 802, 811-12 (7th Cir. 2014) (concluding that joint employers are

not automatically liable under the ADA and liability may be imposed for co-employer’s

discriminatory conduct only if defendant employer knew or should have known about other

employer’s conduct and failed to undertake prompt corrective measures within its control);

Capitol EMI Music, Inc., 311 N.L.R.B. 997 (1993) (concluding that vicarious liability may be

ascribed to a joint employer under the NLRA depending on the employment arrangement

and circumstances); EEOC, Notice No. 915.002, Enforcement Guidance: Application of EEO

Laws to Contingent Workers Placed by Temporary Employment Agencies and Other Staffing

Firms, 1997 WL 33159161, at *11 (Dec. 3, 1997) (staffing agency joint employer liability

may be imposed for co-employer’s discriminatory conduct only if defendant employer knew

or should have known about other employer’s conduct and failed to undertake prompt

corrective measures within its control).

Notably, Printz’s work was an integral part of Frontier’s business, and all his work

was performed on Frontier’s aircraft, if not on their premises. D. & O. at 4.

170

Petitt v. Delta Airlines, Inc., ARB No. 2021-0014, ALJ No. 2018-AIR-00041, slip op.

at 18 (ARB Mar. 29, 2022).

171

172

Id.

30

The ARB reviews an ALJ’s factual findings under the substantial evidence

standard.173 Substantial evidence is “such relevant evidence as a reasonable mind

might accept as adequate to support a conclusion.” 174 A finding of fact lacks

contextual strength and substantial evidence if the fact finder ignores, or fails to

resolve, a conflict created by countervailing evidence or “if it is overwhelmed by

other evidence or if it really constitutes mere conclusion.” 175 “The ARB’s appellate

review requires that the ALJ conduct an appropriate analysis of the evidence to

support his findings.” 176 It is essential that the ALJ “adequately explain why he

credited certain evidence and discredited other evidence.” 177 Although an ALJ “need

not address every aspect of [a party’s claim] at length and in detail,” the findings

“must provide enough information to ensure the Court that he properly considered

the relevant evidence underlying [the party’s] request.” 178 A reviewing court must

be able to “discern what the ALJ did and why he did it.” 179

In support of his finding that Complainant did not establish by a

preponderance of the evidence that his protected activity was a contributing factor

to the adverse action taken against him by STS, the ALJ found although “the

temporal proximity between [Complainant’s] protected activity [on June 2] and

Respondent’s adverse action [on June 4] could provide circumstantial evidence” that

Complainant’s protected activity contributed to the termination of his employment,

that it did not do so in this case.180 As grounds for this determination, the ALJ

found persuasive that Robbins’s decision to terminate Complainant’s employment

was based on reports of Complainant’s conduct when he was not working on

Frontier aircraft and Complainant’s poor interactions with other AMTs and

173

29 C.F.R. § 1979.110(b).

Henrich v. Ecolab, Inc., ARB No. 2005-0030, ALJ No. 2004-SOX-00051, slip op. at 8

(ARB June 29, 2006) (quoting Universal Camera Corp. v. NLRB, 340 U.S. 474, 488 (1951)).

174

Dalton v. U.S. Dep’t of Lab., 58 F. App’x 442, 445 (10th Cir. 2003) (citations omitted);

Carter v. Marten Transp., Ltd., ARB Nos. 2006-0101, -0159, ALJ No. 2005-STA-00063, slip

op. at 7-8 (ARB June 30, 2008) (citations omitted).

175

Clem v. Comput. Scis. Corp., ARB No. 2016-0096, ALJ Nos. 2015-ERA-00003, 00004, slip op. at 17 (ARB Sept. 17, 2019).

176

177

Sea “B” Mining Co. v. Addison, 831 F.3d 244, 253 (4th Cir. 2016) (citations omitted).

178

Mori v. Dep’t of the Navy, 917 F. Supp. 2d 60, 65 (D.D.C. 2013) (citations omitted).

Piney Mountain Coal Co. v. Mays, 176 F.3d 753, 762 n.10 (4th Cir. 1999) (quotations

and citation omitted).

179

180

D. & O. at 35.

31

Frontier personnel, and not Complainant’s protected activity.181 The ALJ found

Robbins’s reasoning was supported by evidence in the record of Complainant’s

actions and inactions that garnered the attention of both Ketterer and Robbins,

including Ketterer’s observation of Complainant on June 3 taking a prolonged break

on his phone in the terminal area.182 The ALJ noted that there was no evidence that

Ketterer was aware of Complainant’s protected activity at the time he asked

Robbins to remove Complainant from further servicing Frontier’s aircraft. 183

Although the ALJ applied the correct contributing factor standard, and

correctly noted that “[t]he Board has observed, ‘that the level of causation that a

complainant needs to show is extremely low,’”184 the ALJ’s contributing factor

analysis failed to address certain evidence in the record and its potential impact on

a contributing factor analysis that may have weighed in Complainant’s favor in

establishing by a preponderance of the evidence that his protected activity

contributed to the termination of his employment. Specifically, the ALJ failed to

discuss the June 3 conversation between Robbins and Complainant, during which

Robbins told Complainant that Ketterer witnessed Complainant in the terminal for

an extended period of time, and that he was “tired of hearing [Complainant’s] name

and that [he] ‘needed to retire or maybe he would just take it for me.’” 185

Robbins’s phone call about “hearing [Complainant’s] name” occurred one day

after Complainant’s reports to Strickland, who in turned called Robbins advising

him of Complainant’s reports, and one day before Robbins decided to terminate

Complainant’s employment. As the ALJ did not analyze Robbins’s statement that

he was “tired of hearing [Complainant’s] name,” we are unable to ascertain whether

Robbins made this statement solely in the context of Ketterer’s multiple reports to

Robbins regarding Complainant’s poor work behavior leading up to and culminating

in Ketterer’s observation of Complainant in the terminal on June 3, or if the

statement was also made partially in the context of Complainant’s protected

activity on June 2. Because the ALJ failed to analyze Robbins’s statement, the

Board cannot reasonably discern whether Complainant’s protected activity was

included in the reasons he was “tired of hearing” Complainant’s name. It may be

that the ALJ found that Robbins’s statement (June 3) was not made considering

181

Id.

182

Id.

183

Id.

184

Id. at 34 (citing Canadian Nat’l Ry., ARB No. 2016-0035, slip op. at 15).

185

Id. at 17.

32

Complainant’s protected activity (June 2), or was ambiguous, or was not made at

all, and thus Complainant’s protected activity was not a consideration in his

decision to terminate Complainant’s employment (June 4), but without any specific

findings or analysis to that effect the Board is unable to ascertain the ALJ’s

decision-making process.

The ALJ also appears to have unduly discounted Complainant’s argument

that STS chose not to follow its progressive disciplinary process and that STS has

applied its process inconsistently.186 STS’s Handbook describes its four-step

progressive discipline policy and procedure, 187 and also lists certain behavior and

conduct issues that are “not subject to progressive discipline and may be grounds for

immediate termination.” 188 Although the Handbook did not require STS to follow

that process,189 the fact that STS chose to bypass the disciplinary steps for

Complainant’s behavior that is not included in Handbook’s list of behavior “not

subject to progressive discipline,” and proceeded immediately to terminate his

employment, may provide circumstantial evidence that Complainant’s protected

activity was a contributing factor in STS’s decision to terminate his employment. 190

An ALJ does not need to address every aspect of a complainant’s claim.191

However, the ALJ’s contributing factor analysis in this case shows that the ALJ did

not analyze or adequately weigh relevant evidence as to the issue of contributing

factor, including STS’s decision to bypass its usual progressive disciplinary process,

or explain how he credited or discredited Robbins’s statement to Complainant in

186

Comp. Post-Hearing Br. at 22-24.

CX 1 at 19-21 (STS’s progressive discipline policy has four steps: Counseling and

Verbal Warning, Written Warning, Suspension and Final Warning Letter, and

Recommendation for Termination of Employment).

187

Id. at 21 (such conduct issues include behavior that is illegal, theft, substance abuse,

intoxication, fighting and other acts of violence at work).

188

Id. at 19 (“STS Line Maintenance reserves the right to combine or skip steps

depending on the facts of each situation and the nature of the offense.”).

189

Employees may meet their evidentiary burden to establish contributing factor with

circumstantial evidence. Williams v. QVC, Inc., ARB No. 2020-0019, ALJ No. 2018-SOX00019, slip op. at 12 (ARB Jan. 17, 2023) (citing Palmer, ARB No. 2016-0035, slip op. at 53.

Circumstantial evidence may include, but is not limited to, temporal proximity, inconsistent

application of an employer’s policies, pretext, shifting explanations by the employer, or

antagonism. Id. at 12 (citations omitted).

190

191

Mori, 917 F. Supp. 2d at 65.

33

support of his temporal proximity and contributing factor findings. As the ALJ

noted, “the level of causation that a complainant needs to show is extremely low .”192

Thus, STS’s choice to bypass its usual disciplinary process, Robbins’s statement

that he was tired of hearing Complainant’s name (within 24 hours of having heard

Complainant’s name when he engaged in protected activity), and the temporal

proximity between Complainant’s protected activity and the adverse action, may

have met that level of causation.

We conclude that the ALJ’s finding that there was no contributing factor

causation was not adequately explained in light of these facts in the record.

Accordingly, the Board cannot affirm the ALJ’s determination that Printz’s

protected activity “played no role whatsoever in STS’s decision to terminate

Complainant’s employment.”193 Therefore, we remand to the ALJ to reconsider his

contributory factor finding, taking into account these identified facts.194

CONCLUSION

We VACATE the ALJ’s finding concerning Frontier’s status as a joint

employer, VACATE the ALJ’s finding concerning whether Printz’s protected

activity was a contributing factor to the determination to terminate his

employment, and REMAND for additional fact-finding and analysis in accordance

with our instructions.

192

D. & O. at 34 (citation omitted).

193

Id. at 36.

Respondent STS also argues before the Board that “the substantial evidence in the

record clearly and convincingly establishes STS would have terminated the Complainant”

absent his protected activity. Respondent STS Response Br. at 27. We decline to

independently assess the record to make this affirmative defense determination on appeal,

but recommend the ALJ do so on remand, regardless of the outcome of his contributing

factor analysis.

194

34

SO ORDERED.

____________________________________

SUSAN HARTHILL

Chief Administrative Appeals Judge

____________________________________

TAMMY L. PUST

Administrative Appeals Judge

____________________________________

IVEY S. WARREN

Administrative Appeals Judge

This is a copy of a public record, reproduced as it was published. It is not legal advice, and it may not be the version a court would rely on. Check the official source before you cite it.

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