JBS Carriers v. Hickey , 2022 UT 31 ( 2022 )


Menu:
  •                            
    2022 UT 31
    IN THE
    SUPREME COURT OF THE STATE OF UTAH
    JBS CARRIERS and AMERICAN ZURICH INSURANCE COMPANY,
    Respondents,
    v.
    UTAH LABOR COMMISSION and DAVID HICKEY,
    Petitioners.
    No. 20210321
    Heard November 10, 2021
    Filed June 30, 2022
    On Certiorari to the Utah Court of Appeals
    Attorneys:
    Brad J. Miller, Rachel Konishi, Greenwood Village, CO, for
    respondents
    Chris Hill, Salt Lake City, for petitioner Utah Labor Commission
    Gary E. Atkin, Kenneth E. Atkin, Salt Lake City, for petitioner
    David Hickey
    JUSTICE PETERSEN authored the opinion of the Court, in which
    CHIEF JUSTICE DURRANT, JUSTICE PEARCE, and JUDGE WELCH
    joined.
    ASSOCIATE CHIEF JUSTICE LEE authored a dissenting opinion.
    Due to his retirement, JUSTICE HIMONAS did not participate herein;
    DISTRICT JUDGE TERESA L. WELCH sat.
    JUSTICE HAGEN became a member of the Court on May 18, 2022,
    after oral argument in this matter, and accordingly did not
    participate.
    JUSTICE PETERSEN, opinion of the Court:
    INTRODUCTION
    ¶1 David Hickey worked as a long-haul truck driver for JBS
    Carriers (JBS). At the end of a three-day drive from Utah to
    California, which included a stretch in which he drove for
    approximately nine hours with only one break and little
    JBS CARRIERS v. HICKEY
    Opinion of the Court
    movement of his left leg, he began experiencing swelling in that
    leg and shortness of breath. After finishing his route, he went to a
    hospital in California. He was diagnosed with a blood clot in his
    left leg (deep vein thrombosis or DVT), which caused blood clots
    in his lungs (pulmonary emboli).
    ¶2 After his hospitalization, Hickey could not return to work
    as a truck driver and sought workers‘ compensation. He asserted
    that the DVT and pulmonary emboli arose from his drive to
    California for JBS. JBS disputed Hickey‘s workers‘ compensation
    claim. It argued that his injuries were actually caused by his
    ―super obesity,‖ a term used in medical literature ―to describe a
    person with a BMI over 50.‖ And JBS asserted that super obesity
    should be considered a preexisting condition under these
    circumstances.
    ¶3 Whether workers‘ compensation claimants have a
    relevant preexisting condition is significant because, if they do, to
    obtain compensation they must show not only medical
    causation—in other words, that the injury is ―medically the
    result‖ of the employment activity, Allen v. Indus. Comm’n,
    
    729 P.2d 15
    , 27 (Utah 1986)—but also legal causation. To show
    legal causation, claimants must show that the employment
    activity ―contributed something substantial to increase the risk
    [they] already faced in everyday life‖ due to their preexisting
    condition. Id. at 25. We have said that to make such a showing, a
    workers‘ compensation claimant must demonstrate that the
    employment activity that precipitated the injury was ―unusual or
    extraordinary‖ when compared to normal life activities. Murray v.
    Utah Lab. Comm’n, 
    2013 UT 38
    , ¶ 48, 
    308 P.3d 461
    .
    ¶4 Here, we are asked to determine whether Hickey‘s long
    drive in a commercial truck is an unusual or extraordinary
    activity in comparison to the ordinary activities people perform in
    their everyday, nonwork lives. We conclude that it is unusual.
    And because Hickey has therefore shown that his employment
    activity was the legal cause of his DVT and pulmonary emboli, we
    need not address whether super obesity is a preexisting condition,
    since he is able to show legal causation even if it was.
    ¶5 Accordingly, we reverse the court of appeals‘ holding
    that Hickey‘s long-haul truck drive was similar to typical,
    everyday activities. Further, we vacate the court‘s conclusion that
    there was substantial evidence in support of the administrative
    law judge‘s (ALJ‘s) finding that Hickey‘s ―super obesity‖ was a
    preexisting condition because it is unnecessary to the resolution of
    2
    Cite as: 
    2022 UT 31
    Opinion of the Court
    Hickey‘s claim. And we reinstate the decision of the Labor
    Commission Appeals Board.
    BACKGROUND
    ¶6 Hickey worked for JBS as a long-haul truck driver. Over
    the course of three days, Hickey drove a route for JBS that began
    in Tremonton, Utah, and ended in Madera, California. Starting
    late on the second day, Hickey drove for six hours and twenty-
    five minutes straight, followed by another two hours and twenty-
    five minutes without stopping. He drove an automatic
    transmission truck that did not require the use of his left leg, so he
    rarely moved that leg while driving the truck. And it was his
    general practice to remain in the driver‘s seat when he stopped for
    loading and unloading, so he likely spent more time in the truck
    than his driving logs indicated.
    ¶7 After arriving at Madera on the third and final day of the
    trip, Hickey began experiencing swelling in his left leg and
    shortness of breath. He went to a local hospital where he was
    admitted for treatment. He was released after three days, but was
    admitted to another hospital ten days later. Hickey was diagnosed
    with DVT and pulmonary emboli. He was hospitalized for a total
    of sixteen days. And when he was finally released, he was unable
    to return to work and applied for workers‘ compensation.
    ¶8 In his workers‘ compensation claim, Hickey argued that
    the DVT and pulmonary emboli arose from his employment with
    JBS as a long-haul truck driver. Specifically, he claimed that the
    blood clots were caused by the second day of his trip, when he
    drove for almost nine hours with only one break and without
    moving his left leg.
    ¶9 JBS disputed Hickey‘s workers‘ compensation claim,
    arguing that his injuries were merely the result of a preexisting
    condition—super obesity—and not his employment. The dispute
    went before an ALJ, who appointed a medical panel and
    ultimately determined that Hickey had failed to show legal
    causation—in other words, that his employment contributed
    something substantial to increase his risk of injury.
    ¶10 The ALJ found that Hickey‘s super obesity was a
    preexisting condition, so he applied the test we adopted in Allen v.
    Industrial Commission, 
    729 P.2d 15
     (Utah 1986), to determine
    whether Hickey‘s employment was the legal cause of his injuries.
    The Allen test is used to distinguish between injuries resulting
    from a preexisting condition that only coincidentally occur while
    3
    JBS CARRIERS v. HICKEY
    Opinion of the Court
    an individual is working and injuries that were precipitated by an
    employment activity that increased the risk of injury normally
    faced by the worker in nonwork life. Id. at 25. To make this
    distinction, we have instructed the agency or court to: (1) consider
    the totality of the circumstances to determine what workplace
    activity precipitated the injury; and (2) determine whether that
    activity was objectively unusual or extraordinary when compared
    to normal life activities. Murray v. Utah Lab. Comm’n, 
    2013 UT 38
    ,
    ¶ 48, 
    308 P.3d 461
    .
    ¶11 After considering the totality of the circumstances
    surrounding Hickey‘s drive to California, the ALJ concluded that
    it was not an unusual or extraordinary activity under part two of
    the Allen test. Because the ALJ denied Hickey‘s claim based on
    lack of legal causation, he never reached the question of medical
    causation and did not calculate Hickey‘s medical expenses or
    disability compensation.
    ¶12 Hickey appealed the decision to the Labor Commission
    Appeals Board (Board), arguing that the medical panel had not
    been qualified to assess his injuries, that the ALJ erred in his
    causation analysis by looking for the greatest risk factor leading to
    Hickey‘s injuries rather than whether Hickey‘s employment
    activity increased the risk of his injuries, and that super obesity
    was not a preexisting condition.
    ¶13 The Board resolved Hickey‘s claim by determining that
    he had satisfied the Allen test. It concluded that Hickey‘s long-
    haul truck drive was an unusual activity when compared to
    nonwork life. And for this reason, the Board did not reach the
    question of whether Hickey‘s super obesity was a preexisting
    condition, because even assuming it was, he was able to show that
    the employment activity was the legal cause of his injury.
    ¶14 The Board remanded the case back to the ALJ ―to
    complete the adjudication of Mr. Hickey‘s claim.‖ The ALJ
    restated his previous conclusion that Hickey‘s super obesity was a
    preexisting condition and adopted the Board‘s holding that
    Hickey had satisfied the Allen test for legal causation. The ALJ
    also determined that Hickey‘s injuries were medically caused by
    his work as a commercial truck driver and accordingly awarded
    Hickey workers‘ compensation benefits.
    ¶15 JBS then appealed the ALJ‘s decision to the Board,
    arguing among other things that the ALJ had misapplied the Allen
    standard of ―unusual or extraordinary‖ activity. The Board
    affirmed the ALJ, and again found it unnecessary to determine
    4
    Cite as: 
    2022 UT 31
    Opinion of the Court
    whether Hickey had a preexisting condition because even if he
    did, he had shown legal causation. JBS then appealed to the court
    of appeals.
    ¶16 The court of appeals reversed the Board, agreeing with
    JBS that Hickey‘s work activities were not unusual or
    extraordinary under Allen. JBS Carriers v. Lab. Comm’n,
    
    2021 UT App 44
    , ¶ 25, 
    489 P.3d 221
    . The court of appeals
    discounted some of the employment circumstances considered by
    the Board because they had not been ―required‖ by the
    employment, noting that the Board had not found that Hickey
    was prevented from taking breaks and that ―no requirement of the
    job prevented Hickey from stretching his inactive left leg while
    operating the truck with his other limbs.‖ Id. ¶ 23. And the court
    ―perceive[d] no meaningful distinction between sitting for a long
    time in a truck cab and sitting for a long time in a passenger car,
    or sitting for a long time in an airplane seat, or even sitting for a
    long time on a couch in front of a television screen‖—activities the
    court considered neither ―unusual [n]or extraordinary.‖ Id. ¶ 24.
    ¶17 Because the court of appeals determined Hickey could
    not show his ―required‖ employment activities were the legal
    cause of his injuries under Allen, it remanded the case to the Board
    to determine in the first instance if Hickey‘s super obesity was a
    preexisting condition. Id. ¶ 28. But despite acknowledging that the
    court of appeals ―do[es] not directly review the decisions of an
    ALJ,‖ the court opined that there was substantial evidence to
    support the ALJ‘s finding that Hickey had a preexisting condition.
    Id. ¶¶ 28, 30, 32–33.
    ¶18 Hickey petitioned for certiorari, which we granted. We
    are asked to decide whether the court of appeals erred in
    (1) reversing the Board‘s determination that Hickey‘s long-haul
    commercial truck drive was an unusual or extraordinary activity
    under the Allen test; and (2) advising that there was substantial
    evidence to support the ALJ‘s finding that Hickey‘s super obesity
    was a preexisting condition, when the Board had not yet
    addressed that question.
    ¶19 We exercise jurisdiction under Utah Code section
    78A-3-102(3)(a).
    STANDARD OF REVIEW
    ¶20 ―On certiorari, we review the decision of the court of
    appeals for correctness, giving no deference to its conclusions of
    law.‖ State v. Richins, 
    2021 UT 50
    , ¶ 39, 
    496 P.3d 158
     (citation
    5
    JBS CARRIERS v. HICKEY
    Opinion of the Court
    omitted). ―And ‗[t]he correctness of the court of appeals‘ decision
    turns, in part, on whether it accurately reviewed the [agency‘s]
    decision under the appropriate standard of review.‘‖ Murray v.
    Utah Lab. Comm’n, 
    2013 UT 38
    , ¶ 7, 
    308 P.3d 461
     (alterations in
    original) (citation omitted).
    ANALYSIS
    ¶21 We first address Hickey‘s claim that the court of appeals
    erred when it determined he had not shown legal causation. The
    court‘s conclusion was based on its determination that Hickey‘s
    long-haul drive was not an unusual or extraordinary activity
    under Allen. But we agree with Hickey that driving a commercial
    truck for approximately nine hours in one day with only one
    break, with a motionless left leg, is not equivalent to ordinary,
    everyday nonwork activities.
    ¶22 Since we conclude that Hickey‘s employment activities
    were the legal cause of his injuries—in other words, that Hickey‘s
    extended truck drive increased the risk of these injuries—we need
    not determine whether Hickey‘s super obesity was a preexisting
    condition or whether the court of appeals erred in addressing the
    ALJ‘s findings on this issue. And we vacate the court of appeals‘
    analysis on this point.
    I. LEGAL CAUSATION
    ¶23 Assuming for the sake of argument that Hickey‘s super
    obesity was a preexisting condition here, the core of the dispute
    before us is legal causation: Did Hickey‘s long drive to California
    increase the risk that he would suffer DVT and pulmonary
    emboli? Or would his injuries have happened in any event
    because of his super obesity, and it was only coincidental that the
    DVT and pulmonary emboli manifested at the end of his drive?
    ¶24 The Workers‘ Compensation Act provides compensation
    to ―[a]n employee . . . who is injured by accident arising out . . . of
    and in the course of the employee‘s employment, wherever such
    injury occurred, if the accident was not purposely self-inflicted.‖
    UTAH CODE § 34A-2-401(1). We have interpreted the language
    ―arising out of and in the course of the employee‘s employment‖
    as ―requir[ing] proof of a causal connection between the injury
    and the worker‘s employment duties.‖ Allen v. Indus. Comm’n,
    
    729 P.2d 15
    , 22, 24–25 (Utah 1986) (citation omitted).
    ¶25 It becomes more difficult to determine whether an injury
    ―ar[ose] out of and in the course of the employee‘s employment‖
    6
    Cite as: 
    2022 UT 31
    Opinion of the Court
    when the employee has a preexisting condition. We addressed
    this challenge in Allen, explaining that,
    The causation requirement makes it necessary to
    distinguish those injuries which (a) coincidentally
    occur at work because a preexisting condition
    results in symptoms which appear during work
    hours without any enhancement from the
    workplace, and (b) those injuries which occur
    because some condition or exertion required by the
    employment increases the risk of injury which the
    worker normally faces in his everyday life.
    Id. at 25.
    ¶26 To help determine causation when a claimant has a
    preexisting condition, we adopted a test from Arthur Larson‘s
    treatise, The Law of Workmen’s Compensation. Id. at 25–27 (citing
    ARTHUR LARSON, THE LAW OF WORKMEN‘S COMPENSATION
    § 38.83(b), at 7–278 (1986)). ―Under that test, a claimant must
    establish that the conditions or activities of his job were both the
    medical cause and the legal cause of his injury.‖ Murray v. Utah
    Lab. Comm’n, 
    2013 UT 38
    , ¶ 45, 
    308 P.3d 461
    . To establish medical
    causation, a claimant must show ―there is a medically
    demonstrable causal link between the work-related exertions and
    the unexpected injuries that resulted from those strains.‖ Allen,
    729 P.2d at 27. If a claimant has no relevant preexisting condition,
    the claimant need show only medical causation. See id. at 26. But a
    claimant with a relevant preexisting condition must also show
    ―that the employment contributed something substantial to
    increase the risk he already faced in everyday life because of his
    condition.‖ Id. at 25.
    ¶27 There is no dispute that Hickey has demonstrated
    medical causation, so only legal causation is at issue here. In
    Murray v. Utah Labor Commission, we further distilled the legal
    causation test from Allen: the first step is to ―characterize the
    employment-related activity that precipitated the employee[‘s]
    injury, taking into account the totality of the circumstances.‖
    
    2013 UT 38
    , ¶ 48. This is a question of fact, id. ¶ 49, which we
    review for substantial evidence, see UTAH CODE § 63G-4-403(4)(g).
    The second step is to ―determine whether this activity is
    objectively unusual or extraordinary‖ when compared with
    typical, nonemployment life. Murray, 
    2013 UT 38
    , ¶ 48. ―This . . .
    determination is a mixed question of law and fact,‖ Price River
    Coal Co. v. Indus. Comm’n of Utah, 
    731 P.2d 1079
    , 1082 (Utah 1986),
    7
    JBS CARRIERS v. HICKEY
    Opinion of the Court
    because it requires the agency to apply ―a legal standard to a set
    of facts unique to a particular case,‖ Murray, 
    2013 UT 38
    , ¶ 24
    (citation omitted). But ―the question of whether a set of facts falls
    within a legal standard is itself a question of law,‖ id. ¶ 33, so we
    do not defer to the Board‘s legal determination of whether an
    employment activity was unusual or extraordinary, see id. ¶ 40.
    A. Step One: Totality of the Circumstances
    ¶28 Under the initial Allen inquiry, the ―agency must
    determine as a matter of fact exactly what were the employment-
    related activities of the injured employee.‖ Price River Coal Co.,
    731 P.2d at 1082. In other words, ―in determining whether the
    employment activity that precipitated [Hickey‘s] injury was
    ‗unusual‘ under Allen, we must consider the totality of the
    circumstances.‖ See Murray, 
    2013 UT 38
    , ¶ 47.
    ¶29 The court of appeals noted that the facts of Hickey‘s
    employment activity prior to his injuries were not in dispute:
    The [Board] described the relevant portion of
    Hickey‘s employment activity as ―driving for more
    than six hours without a break and then driving for
    almost two and a half hours more later in the same
    day.‖ Additionally, the [Board] noted that Hickey‘s
    truck ―had an automatic transmission that did not
    require use of his left leg to engage the truck‘s
    pedals,‖ and noted that Hickey ―would usually
    remain in the driver‘s seat as his truck was being
    loaded and unloaded,‖ which meant ―that his
    driving time alone did not fully account for the time
    he spent sitting in the truck.‖
    JBS Carriers v. Lab. Comm'n, 
    2021 UT App 44
    , ¶ 19, 
    489 P.3d 221
    .
    ¶30 However, the court of appeals discounted some of the
    Board‘s factual findings and inferences because they related to
    activity that was not specifically ―required‖ by JBS. In particular,
    the court disregarded the Board‘s finding that Hickey had not
    moved his left leg while driving because ―Hickey offered no
    evidence that his employment duties required him to keep his leg
    motionless while driving.‖ 
    Id.
     (emphasis added). And the court
    discounted the Board‘s finding that Hickey had spent more time
    sitting in his truck than his driving logs indicated because ―no
    party offered any evidence that Hickey‘s employment duties
    required him to drive for any particular length of time before
    taking a break.‖ 
    Id.
     (emphasis added).
    8
    Cite as: 
    2022 UT 31
    Opinion of the Court
    ¶31 The court‘s focus on whether the manner in which Hickey
    conducted his employment activities was required by JBS was
    based on its interpretation of language from Allen. As quoted
    above, we stated in Allen that the legal causation test helps to
    identify ―those injuries which occur because some condition or
    exertion required by the employment increases the risk of injury
    which the worker normally faces in his everyday life.‖ 729 P.2d at
    25 (emphasis added).
    ¶32 But we did not intend for this phrase to narrow the
    circumstances relevant to legal causation to only those actions
    specifically required by the employer. Generally, the term
    ―required‖ means ―stipulated as necessary to be done, made, or
    provided.‖      Required,    MERRIAM-WEBSTER       DICTIONARY,
    https://www.merriam-webster.com/dictionary/required        (last
    visited June 14, 2022). ―Required‖ can be used in common
    parlance at both a general and specific level—for example,
    Hickey‘s employment ―required‖ him to drive to California,
    although it may not have specifically ―required‖ him to drive
    without moving his leg or to stay in his truck during stops for
    loading and unloading.
    ¶33 We clarify that in Allen, we were using the phrase
    ―required by the employment‖ at a general level. A ―condition or
    exertion required by the employment‖ refers generally to
    conditions, exertions, or activities that are employment-related as
    opposed to those activities that are not associated with work. This
    language does not mean that to be relevant to the Allen totality-of-
    the-circumstances inquiry, the specific manner in which the
    claimant performed the work activity had to be required by the
    employer. For example, in Allen, we described the claimant‘s
    relevant workplace activity as ―moving and lifting several piles of
    dairy products weighing thirty to fifty pounds in the confined
    area of the cooler.‖ 729 P.2d at 28. We remanded for additional
    fact-finding to determine ―how many crates were moved by the
    claimant, the distance the crates were moved, the precise weight
    of the crates, and the size of the area in which the lifting and
    moving took place.‖ Id. Notably, we did not ask if the employer
    required the claimant to lift a certain number of crates at a time or
    use a certain technique. This is because the relevant ―totality of
    the circumstances‖ includes all work-related activity that
    precipitated the injury. The limiting factor is whether the activity
    was related to the claimant‘s employment, not whether the
    employer required the claimant to perform the work in the
    specific manner that caused the injury.
    9
    JBS CARRIERS v. HICKEY
    Opinion of the Court
    ¶34 The totality-of-the-circumstances analysis in Murray also
    demonstrates this point. In that case, a park ranger stumbled on a
    boat while on patrol, and we described the workplace activity by
    referring to the position in which he was standing, what he was
    holding, what he was wearing, and the manner in which he fell.
    
    2013 UT 38
    , ¶¶ 49–50. We did not address whether he had been
    required to stand in a certain way, or to balance himself in such a
    manner. The required employment activity was the act of
    engaging in boat patrol—not the exact manner in which the
    claimant did so. 
    Id.
    ¶35 To read ―required by the employment‖ granularly causes
    the Allen framework to diverge from the language of the Workers‘
    Compensation Act. The Act ―represents a compromise between
    employee and employer.‖ Gudmundson v. Del Ozone, 
    2010 UT 33
    ,
    ¶ 28, 
    232 P.3d 1059
    . Under this compromise, ―workers give up
    their right to sue their employers in tort for workplace injuries. In
    return, workers are granted the right to statutory remedies that
    are afforded without regard to proof of fault.‖ Helf v. Chevron
    U.S.A. Inc., 
    2015 UT 81
    , ¶ 89, 
    361 P.3d 63
     (Lee, A.C.J., dissenting).
    This bargain allows workers to recover workers‘ compensation,
    even if they were negligent or at fault in some way, so long as
    ―the accident was not purposely self-inflicted.‖ UTAH CODE
    § 34A-2-401(1). The Workers‘ Compensation Act even allows
    employees to receive workers‘ compensation ―when injury is
    caused by the willful failure of the employee‖ to obey reasonable
    safety rules, but with a fifteen percent deduction from the award.
    Id. § 34A-2-302(3)(a).
    ¶36 Overly narrowing the relevant employment activities
    results in a distortion of this hallmark of the Workers‘
    Compensation Act. The court of appeals noted that Hickey
    ―presented no evidence that the delivery requirements of the trip
    in question made it impractical to take breaks‖ and that ―no
    requirement of the job prevented Hickey from stretching his
    inactive left leg while operating the truck with his other limbs.‖
    JBS Carriers, 
    2021 UT App 44
    , ¶ 23. By analyzing whether Hickey
    was required to complete his work as he did, the court introduced
    an element of comparative fault that the workers‘ compensation
    framework was designed to avoid. The facts relevant to a
    workers‘ compensation claim include all of the work-related
    activities that precipitated the worker‘s injuries—not what they
    could or should have been.
    10
    Cite as: 
    2022 UT 31
    Opinion of the Court
    ¶37 The totality of the circumstances found by the Board were
    that Hickey drove a route from Utah to California over the course
    of three days, which involved a particular stretch in which he
    drove for almost six-and-a-half hours straight followed by another
    two-and-a-half-hour drive. He was stationary during this time,
    and in particular did not move his left leg because the truck had
    an automatic transmission. Further, Hickey provided evidence
    that as a general practice, he remained seated in his truck during
    stops for loading and unloading. The Board inferred from this that
    Hickey had likely followed this same practice during his drive to
    California, and therefore ―his driving time alone did not fully
    account for the time he spent sitting in the truck.‖ Id. ¶ 19. All of
    these facts are included in the ―totality of the circumstances‖
    relevant to the Allen analysis. At a general level, Hickey was
    required to drive to California for work. It does not matter
    whether JBS specifically required him to drive for an extended
    period of time without breaks or to keep his left leg still.
    B. Step Two: Unusual or Extraordinary Activity
    ¶38 Having identified the totality of the circumstances
    surrounding the employment activity that precipitated Hickey‘s
    injuries, we turn to the court of appeals‘ determination that this
    activity was not unusual under step two of the Allen test. We
    disagree with the court of appeals and conclude that Hickey‘s
    long-haul drive in a commercial diesel truck is distinct from
    typical nonemployment activities in everyday life.
    ¶39 Under step two of the Allen test, we must ―compare the
    activity that precipitated the employee‘s injury with ‗the usual
    wear and tear and exertions of nonemployment life.‘‖ Murray,
    
    2013 UT 38
    , ¶ 48 (quoting Allen, 729 P.2d at 26). We apply an
    objective standard, based on activities ―the average person
    typically undertakes in nonemployment life,‖ Allen, 729 P.2d at
    28, rather than looking to ―the nonemployment life of the
    particular worker,‖ id. at 26. An activity is unusual under the test
    if the exertion it requires or its impact on the body is different
    from the ―typical nonemployment activities . . . generally expected
    of people in today‘s society.‖ Id. Examples of employment
    activities that Utah courts have considered unusual and
    extraordinary include those that involve ―jumping, lifting great
    weight, or repetition.‖ Murray, 
    2013 UT 38
    , ¶ 51. In contrast, the
    Allen court named examples of typical exertions performed in
    ordinary life, including taking a trash can out to the curb and
    ―climbing the stairs in buildings.‖ 729 P.2d at 26.
    11
    JBS CARRIERS v. HICKEY
    Opinion of the Court
    ¶40 Applying this objective standard, the court of appeals
    concluded that Hickey‘s drive was neither unusual nor
    extraordinary because the court ―perceive[d] no meaningful
    distinction between sitting for a long time in a truck cab and
    sitting for a long time in a passenger car, or sitting for a long time
    in an airplane seat, or even sitting for a long time on a couch in
    front of a television screen.‖ JBS Carriers, 
    2021 UT App 44
    , ¶ 24.
    We must disagree for two reasons.
    ¶41 First, the Allen analysis requires a comparison of the
    workplace activity with nonwork activity that is typical of
    everyday life. The question is not whether some corollary can be
    identified in nonwork life that some people may do occasionally,
    but whether the employment activity is like the usual and
    ordinary activities that people do in everyday life. Unlike taking
    out the trash or climbing stairs, driving a commercial truck for
    nine hours in one day with only one break—and with a stationary
    left leg—is not typical of everyday nonwork life. And while some
    people may watch television for nine hours straight without
    moving, take nine-hour international flights and leave their seat
    only once, or go on long road trips, we cannot describe these as
    typical of the usual, ordinary activities people do day to day.
    ¶42 Fundamentally, if we define usual nonemployment
    activities so broadly as to include international flights and binge-
    watching television, we may distort the Allen test so that virtually
    any work activity has some equivalent in nonemployment life. For
    example, we have concluded that ―jumping, lifting great weight,
    [and] repetition,‖ Murray, 
    2013 UT 38
    , ¶ 51, are unusual
    workplace activities. But some people may sometimes do those
    things in nonwork life. After all, some people jump out of
    airplanes with parachutes, lift 200 pounds at the gym, or run
    marathons. But the fact that some people sometimes do these
    things does not make them typical of everyday life. In analyzing
    whether a particular workplace activity is ―unusual‖ or
    ―extraordinary,‖ the benchmark for usualness or ordinariness is
    activity that is typical of everyday nonwork life—like taking out a
    trash can, walking up stairs, Allen, 729 P.2d at 26, or regaining
    one‘s balance during a bumpy bus ride, Murray, 
    2013 UT 38
    , ¶ 53.
    ¶43 Second, the nonemployment activities referenced by the
    court of appeals differ from professional long-haul truck driving
    in some key respects. Hickey was not just sitting passively for
    nine hours. He was responsible for operating a commercial 18-
    wheel diesel truck on the highway from Utah to California. So he
    12
    Cite as: 
    2022 UT 31
    Opinion of the Court
    had to remain focused on the road, seated in the driver‘s seat, and
    in a relatively stationary position with his head forward and arms
    on the steering wheel. His left leg was motionless, and in general
    he had ―very little‖ room to move his feet. He had ―limited
    opportunity . . . to stretch, change position, or otherwise move
    about.‖ And the Board emphasized that ―driving a truck is more
    complex and demanding than operating or traveling in a personal
    automobile.‖ If Hickey‘s job was more taxing than driving a
    personal car, it was certainly more demanding than sitting on a
    sofa watching television or sitting on an airplane as a passenger.
    ¶44 But while we ultimately disagree with the court of
    appeals‘ determination that Hickey‘s drive to California was not
    an unusual activity under Allen, we recognize the challenge the
    Labor Commission and courts face when asked to assess whether
    an employment activity is typical, usual, or ordinary. The varying
    conclusions of the ALJ, the Board, the court of appeals, and now
    our court on this question demonstrate this difficulty. Perceptions
    of what is ―usual‖ or ―unusual‖ can vary. And we do not dispute
    the dissent‘s observation that there is no precise metric for
    determining what is typical or usual. Infra ¶¶ 52–53.
    ¶45 It is possible that, as the dissent posits, there is a better
    way to determine whether a claimant‘s injury arose ―out of and in
    the course of the employee‘s employment,‖ UTAH CODE
    § 34A-2-401(1), when the claimant has a preexisting condition. But
    neither party has asked us to overturn Allen or briefed the Eldridge
    factors for overturning precedent. See Eldridge v. Johndrow,
    
    2015 UT 21
    , ¶ 22, 
    345 P.3d 553
     (identifying ―(1) the persuasiveness
    of the authority and reasoning on which the precedent was
    originally based, and (2) how firmly the precedent has become
    established in the law since it was handed down‖ as two factors to
    consider before overturning precedent). And we have no briefing
    before us on the merits of an alternative to the Allen test. So while
    the dissent makes some valid points, ―[w]e do not overrule our
    precedents ‗lightly.‘‖ Taylorsville City v. Mitchell, 
    2020 UT 26
    , ¶ 30,
    
    466 P.3d 148
     (quoting Eldridge, 
    2015 UT 21
    , ¶ 21). And we
    generally do not return to the drawing board ―unless and until a
    party meets its burden of establishing that our prior case law is
    unworthy of stare decisis respect.‖ Waite v. Utah Lab. Comm’n,
    
    2017 UT 86
    , ¶ 88, 
    416 P.3d 635
     (Pearce, J., concurring).
    ¶46 To provide additional guidance in this area within the
    confines of our precedent, we emphasize that the question is not
    whether some corollary to the employment activity can be located
    13
    JBS CARRIERS v. HICKEY
    Opinion of the Court
    that some people may do outside of work. The question is
    whether the employment activity is comparable to the usual and
    ordinary activities that are typical of everyday nonwork life.
    ¶47 Because we have determined that driving a commercial
    diesel truck for approximately nine hours with only one break
    and a stationary left leg is not like the ordinary activities people
    do in everyday life, we reverse the court of appeals‘ decision.
    Hickey has successfully shown his employment activities were the
    legal cause of his injuries under Allen. Accordingly, he has
    prevailed on his workers‘ compensation claim, regardless of
    whether his super obesity was a preexisting condition.
    ¶48 For this reason, we need not determine whether Hickey‘s
    super obesity functioned as a preexisting condition here. And we
    do not address whether the court of appeals erred in opining on
    this question, which was addressed by the ALJ but not the Board.
    Accordingly, we vacate this portion of the court of appeals‘
    opinion.
    CONCLUSION
    ¶49 When a workers‘ compensation claimant has a
    preexisting condition, the claimant must show that the
    employment activity that precipitated the injury was the medical
    cause and the legal cause of those injuries. To determine legal
    causation, the initial step is to consider the totality of the
    employment-related circumstances that precipitated the injury—
    without regard to whether the manner in which the claimant
    conducted the work was specifically required by the employer.
    The next step is to determine whether the employment activity is
    unusual or extraordinary when compared with the typical,
    ordinary activities that people do in everyday, nonwork life.
    Because we conclude that Hickey‘s drive to California was an
    unusual activity, he has shown legal causation. We therefore
    reverse the court of appeals‘ opinion and reinstate the decision of
    the Board.
    ASSOCIATE CHIEF JUSTICE LEE, dissenting:
    ¶50 Our case law holds that a workers‘ compensation
    claimant who has a preexisting condition must show that his
    ―employment contributed something substantial to increase the
    risk he already faced in everyday life because of his condition.‖
    Allen v. Indus. Comm’n, 
    729 P.2d 15
    , 25 (Utah 1986). This is our
    standard of legal causation. It requires (1) an identification of ―the
    14
    Cite as: 
    2022 UT 31
    LEE, A.C.J., dissenting
    employment-related activity that precipitated the employee[‘s]
    injury,‖ and (2) a determination as to ―whether this activity is
    objectively unusual or extraordinary‖ compared to a baseline of
    what is ―typical‖ or ―usual‖ in nonemployment life. Murray v.
    Utah Lab. Comm’n, 
    2013 UT 38
    , ¶ 48, 
    308 P.3d 461
     (citations
    omitted); see also Allen, 729 P.2d at 26 (speaking of ―typical
    nonemployment activities . . . generally expected of people in
    today‘s society‖); id. at 28 (stating that the claimant must show
    that his exertion ―exceeded [what] the average person typically
    undertakes in nonemployment life‖).
    ¶51 The baseline is framed in purportedly objective terms. It
    is defined not by an individual worker‘s subjective activity in his
    actual ―nonemployment life‖ but by what is ―typical,‖ ―usual,‖ or
    ―generally expected‖ of ―average‖ people ―in today‘s society.‖ Id.
    at 26, 28. But these seemingly objective terms lack clear meaning
    in our case law. And unless and until we fill in the missing
    substance we won‘t really have an objective standard. We will
    have a test that carries an air of objectivity but leaves case-by-case
    disposition up to the subjective inclinations of individual
    factfinders. See supra ¶ 44 (acknowledging that the court has not
    established a ―precise metric for determining what is typical or
    usual‖ and conceding that this creates a ―challenge‖—opening the
    door to ―[t]he varying conclusions of the ALJ, the Board, the court
    of appeals, and now our court‖ in this case).
    ¶52 The closest we have come to giving content to the
    standard is in the lists set forth in our cases—of nonemployment
    activities we deem to fall either within or beyond the bounds of
    what is typical. Allen says that ―typical‖ nonemployment activities
    include ―climbing the stairs in buildings‖ and taking a trash can
    out to the curb. 729 P.2d at 26. And Murray states that ―jumping,‖
    ―lifting great weight,‖ and ―repetition‖ of such activity are
    atypical. 
    2013 UT 38
    , ¶ 51. But our cases identify no predicate for
    our formulation of these lists, and they provide no guidance as to
    how the lists might be extended in future cases. And we have
    sidestepped the devil that is lurking in the details of our lists.
    ¶53 A key point of imprecision is in the lack of a standard for
    judging typicality or usualness. How is the average person
    defined? How many members of the general public must engage
    in a given activity for it to count as typical? How frequently must
    they engage in it for it to qualify as usual? And how is a factfinder
    supposed to judge whether a given activity satisfies the
    standard—to measure the extent or frequency of a given activity?
    15
    JBS CARRIERS v. HICKEY
    LEE, A.C.J., dissenting
    We have nowhere acknowledged the difficulty posed by these
    unanswered questions. And we have come nowhere close to
    answering them.
    ¶54 The Allen lists are worse than opaque. They are also
    misleading. We have never identified the degree of stair-climbing
    or trash-can-carrying that is typical or usual. And a given job
    could easily require more stair-climbing or trash-can-carrying (or
    similar acts) than most people engage in with any regularity. A
    parallel problem appears in our lists of supposedly unusual
    activities. Surely there are a lot of people who engage in a degree
    of jumping and heavy lifting in their day-to-day nonemployment
    activities. For these reasons, the seemingly objective lists set forth
    in Allen and Murray are not only not objective; they do not align
    with the theory of our law of legal causation.1
    ¶55 All of these problems are on display in the case before us
    here. The majority seeks to address them in its response to the
    court of appeals‘ extension of our lists in Allen and Murray—the
    court of appeals‘ addition of ―sitting for a long time in an airplane
    seat‖ and ―sitting for a long time on a couch in front of a
    television screen.‖ See supra ¶ 16. But the majority‘s response to
    the additions to our lists kicks the can down the road on the
    above-noted points of imprecision.
    ¶56 The majority suggests that the court of appeals‘ additions
    to our lists are problematic because they do not describe acts that
    are ―typical of the usual, ordinary activities people do day-to-
    day.‖ Supra ¶ 41. And the majority attempts to address some
    points of imprecision in our case law by ―emphasiz[ing]‖ that ―the
    __________________________________________________________
    1 These concerns are not entirely new. Some of them were
    raised decades ago by Associate Chief Justice Stewart. See Allen v.
    Indus. Comm’n, 
    729 P.2d 15
    , 30 (Utah 1986) (Stewart, A.C.J.,
    dissenting) (stating that the dissent was ―unable to understand
    how an administrative law judge, the [Labor] Commission, or an
    appellate court is supposed to determine what ‗typical
    nonemployment activities‘ are ‗in today‘s society‘‖; questioning
    whether the standard ―mean[s] what a typical sixty-five-year-old
    does or a typical twenty-one-year-old?‖; objecting to the
    formulation of lists of activities that ―reflect only what some
    people may do from time to time― ―[i]nstead of defining a
    meaningful standard‖; and concluding that our law ―has not set
    forth a workable standard‖).
    16
    Cite as: 
    2022 UT 31
    LEE, A.C.J., dissenting
    question is not‖ what ―some people may do occasionally‖
    ―outside of work.‖ Supra ¶¶ 41, 46. But the court nowhere
    identifies a standard or quantum of typicality or usualness, or a
    basis for concluding that carrying a trash can to the curb is a
    ―typical‖ ―day-to-day‖ event for an ―average‖ person but tv
    binge-watching is not.
    ¶57 Today‘s majority begs all the same questions that Allen
    did—as to how the ―average‖ person is to be defined; how many
    members of the general public must engage in an activity for it to
    count as ―typical‖; how frequently they must engage in it for it to
    qualify as ―day-to-day,‖ ―everyday,‖ or ―usual‖;2 and how the
    factfinder is supposed to measure the commonality or frequency
    of these sorts of events. (My sample size is admittedly small, but
    the members of my household seem to engage in more binge-
    watching than trash-can-carrying.)
    ¶58 I respectfully dissent from the extension of an ―objective‖
    standard that lacks these (and other important) hallmarks of
    objectivity. And I see no way to reframe Allen in terms that are
    both truly objective and practically workable.
    ¶59 A truly objective inquiry may ultimately prove
    unattainable in this context, at least in the broad run of cases. 3 I
    __________________________________________________________
    2 The majority refers both to ―day-to-day‖ activities and uses
    the Allen language of ―everyday‖ activities. Supra ¶¶ 38, 41–42, 46;
    Allen, 729 P.2d at 25          (asking whether ―the employment
    contributed something substantial to increase the risk‖ that a
    worker ―already faced in everyday life because of his condition‖);
    see also Murray v. Utah Lab. Comm’n, 
    2013 UT 38
    , ¶ 53, 
    308 P.3d 461
    (holding that the claimant‘s exertion was not more than
    ―generally expected . . . in everyday life‖).
    3 See Duvall v. Charles Connell Roofing, 
    564 A.2d 1132
    , 1135–37
    (Del. 1989) (rejecting the objective standard proposed in the
    Larson treatise on workers‘ compensation on the ground that
    ―this rule . . . raises several immediate problems,‖ including:
    ―Who is the average person in ‗normal‘ non-employment life[,]
    [and] how is the comparable level of activity in ‗normal‘ non-
    employment life to be determined, and by whom? How does one
    compare the level of exertion in moving or lifting heavy objects on
    the job versus strenuous, but ‗normal‘ non-employment
    activities?‖).
    17
    JBS CARRIERS v. HICKEY
    LEE, A.C.J., dissenting
    see no ready model for refining the objective standard. The case
    law in the minority of states that have adopted a ―typical
    nonemployment activities‖ standard suffers from the same
    deficiencies found in our law.4 And even the treatise that
    formulated the objective standard relies on lists of activities—
    without any basis for connecting the list to an objective, workable
    standard. LARSON‘S WORKERS‘ COMPENSATION LAW § 46.03;
    id. § 46.03[2] (asserting that ―the usual wear and tear of
    life . . . certainly includes lifting objects weighing 20 pounds, such
    as bags of golf clubs, minnow pails, and step ladders‖ but that
    ―people generally do not lift 200-pound weights as a part of
    nonemployment life‖).
    ¶60 Even if we established a quantum of extensiveness or
    frequency for an activity to qualify as ―typical‖ or ―unusual,‖ that
    would still leave the task of identifying a mechanism for applying
    these standards to the activities proposed for the baseline in an
    individual case. That could lead to an extensive trial within a
    trial—to allow the parties to put on expert or fact testimony as to
    the extensiveness and frequency of a given set of purportedly
    comparable activities, and to engage in a debate over whether and
    to what extent the baseline activities are comparable to the
    requirements of a claimant‘s job. And these practical problems
    may be enough to bring us back to the drawing board on the
    standard for legal causation.
    ¶61 The drawing board could lead us to revisit the Allen
    court‘s adoption of an objective standard. It would be helpful to
    have briefing on a possible basis for overruling Allen and
    replacing it with a subjective test.5
    __________________________________________________________
    4 See, e.g., Leitz v. Roberts Dairy, 
    465 N.W.2d 601
    , 605–07 (Neb.
    1991) (concluding without further development of the standard
    that the claimant‘s exertion while moving ice cream carts was
    ―greater       than      that     experienced    during . . . ordinary
    nonemployment life‖); see also id. at 608 (Shanahan, J., concurring)
    (expressing the view that ―[t]he majority has declined to explain
    or illustrate application of the [objective] standard‖—and
    describing the standard as ―not only impractical but unrealistic
    and an invitation for conjecture and speculation‖).
    5  The parties, admittedly, have not ―asked us to overturn
    Allen,‖ or briefed the standard for overruling it under our doctrine
    of stare decisis. Supra ¶ 45. But they have asked us to apply the
    (continued . . .)
    18
    Cite as: 
    2022 UT 31
    LEE, A.C.J., dissenting
    ¶62 Such briefing could highlight the imprecision in and
    unworkability of our objective test as it now stands. And it could
    develop a point made in the dissenting opinion in Allen—the
    notion that the operative text of the statute seems to cut against an
    objective standard. See Allen, 729 P.2d at 29 (Stewart, A.C.J.,
    dissenting). The statute, after all, provides that an employee
    ―injured . . . by accident arising out of and in the course of the
    employee‘s employment‖ is entitled to compensation unless the
    injury was ―purposely self-inflicted.‖ UTAH CODE § 34A-2-401(1).
    And it is hard to see how the ―typical‖ or ―usual‖ activity of the
    general public—or ―average‖ people—should figure into this
    requirement of causation.
    ¶63 An individual worker‘s subjective nonemployment
    activity seems a better fit.6 Under a subjective standard, an injury
    may not arise ―out of and in the course of the employee‘s
    Allen standard. And as the court of last resort in this state, it is our
    job to articulate that standard in clear, workable terms—terms
    that provide some promise that the cases in this field will be
    decided in accordance with the rule of law, and not on the basis of
    the case-by-case preferences of judicial officers. See McDonald v.
    Fid. & Deposit Co. of Md., 
    2020 UT 11
    , ¶ 33, 
    462 P.3d 343
     (―It is our
    province and duty to say what the law is. In fulfilling that duty
    we are not limited to a choice between the parties‘ competing
    positions. We must get the law right, even if in so doing we
    establish a standard that differs from either of the approaches
    presented in the briefing on appeal.‖).
    Perhaps we would benefit from further briefing in order to
    accomplish that task. If so, we should ask for it. See Widdison v.
    State, 
    2021 UT 12
    , ¶ 120 n.32, 
    489 P.3d 158
     (Lee, A.C.J., concurring)
    (recognizing this court‘s ―prerogative of seeking supplemental
    briefing where we lack an express request and [would] find
    adversary briefing helpful‖ (citations omitted)). And if we decide
    not to seek it, we are ―in no position to blame the decision not to
    reconsider [relevant precedent] on a lack of briefing‖ that is the
    result of ―our own decision not to order supplemental briefing.‖
    Blanke v. Utah Bd. of Pardons & Parole, 
    2020 UT 39
    , ¶¶ 83–84, 86,
    
    467 P.3d 850
     (Lee, A.C.J., concurring).
    6   See Leitz, 465 N.W.2d at 610 (Shanahan, J., concurring)
    (criticizing the objective standard and advocating for ―a more
    practical and realistic‖ comparison with ―the employee‘s usual
    nonemployment exertion‖).
    19
    JBS CARRIERS v. HICKEY
    LEE, A.C.J., dissenting
    employment‖ if the worker suffers an injury at work while
    performing an activity he usually performs outside of work. See
    UTAH CODE § 34A-2-401(1). The worker‘s subjective, day-to-day
    activities could thus be the relevant baseline under the statute.
    And such a baseline might elide the range of problems that are
    confounding our law in this area.
    ¶64 Some day this court will have occasion to consider these
    questions. When it does, I suspect it will reject the opaque,
    ―objective‖ test set forth in Allen and replace it with a subjective
    standard that seems to better accord with the controlling text of
    the Workers‘ Compensation Act. I look forward to that day—from
    a new perch as an observer rather than a member of this court.
    20