Bristol Borough v. Workers' Comp. Appeal Bd. , 206 A.3d 585 ( 2019 )


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  •            IN THE COMMONWEALTH COURT OF PENNSYLVANIA
    Bristol Borough,                               :
    Petitioner        :
    :   No. 464 C.D. 2018
    v.                               :   Argued: November 14, 2018
    :
    Workers' Compensation Appeal                   :
    Board (Burnett),                               :
    Respondent              :
    BEFORE:       HONORABLE RENÉE COHN JUBELIRER, Judge
    HONORABLE ROBERT SIMPSON, Judge
    HONORABLE P. KEVIN BROBSON, Judge
    HONORABLE PATRICIA A. McCULLOUGH, Judge
    HONORABLE ANNE E. COVEY, Judge
    HONORABLE MICHAEL H. WOJCIK, Judge
    HONORABLE ELLEN CEISLER, Judge
    OPINION
    BY JUDGE SIMPSON                               FILED: March 22, 2019
    I. Introduction
    In this case involving the reporting requirements for a cancer claim by
    a volunteer firefighter under Sections 108(r) and 301(f) of the Workers’
    Compensation Act (Act),1 Bristol Borough (Employer) petitions for review of an
    order of the Workers’ Compensation Appeal Board (Board) that affirmed, as
    modified, a Workers’ Compensation Judge’s (WCJ) order granting William
    Burnett’s (Claimant) claim petition and awarding him total disability benefits for a
    closed period. Section 301(c)(2) of the Act, 77 P.S. §411(2), provides that the term
    “injury” as used in the Act shall include an “occupational disease” as defined in
    Section 108 of the Act. The Act of July 7, 2011, P.L. 251 (commonly known as Act
    1
    Act of June 2, 1915, P.L. 736, as amended, added by the Act of July 27, 2011, P.L. 251,
    77 P.S. §§27.1(r), 414, respectively.
    46), amended Section 108 to include: “(r) Cancer suffered by a firefighter which is
    caused by exposure to a known carcinogen which is recognized as a Group 1
    carcinogen by the International Agency for Research on Cancer.”2 77 P.S. §27.1(r).
    Act 46 also added Section 301(f) of the Act, 77 P.S. §414, which requires that any
    claim by a member of a volunteer fire company be based on evidence of direct
    exposure to a carcinogen referred to in Section 108(r) as documented by reports filed
    pursuant to the Pennsylvania Fire Information Reporting System (PennFIRS).
    In the present case, the WCJ determined Claimant met his burden of
    proving his entitlement to benefits for cancer, which his doctors diagnosed as diffuse
    large B-cell/Non-Hodgkin’s lymphoma (large B-cell NH-lymphoma), under
    Sections 301(c)(2), 301(f) and 108(r) of the Act.                The WCJ determined that
    Claimant’s medical expert, Dr. Tee L. Guidotti (Dr. Guidotti), credibly opined in his
    report3 that Claimant’s type of lymphoma arose from his exposure to Group 1
    carcinogens in fire smoke, primarily trichloroethylene (TCE), a halogenated alkene
    compound formed by the reaction of organic material produced by burning and
    chlorine from sources such as polyvinyl chloride furnishings and products found in
    structures.
    2
    The International Agency for Research on Cancer (IARC) is a specialized research group
    within the World Health Organization that attempts to identify the causes of human cancers. The
    IARC evaluates various agents, mixtures, and exposures and classifies them into one of five
    groups. Group 1 substances are classified as carcinogenic to humans. See City of Phila. Fire Dep’t
    v. Workers’ Comp. Appeal Bd. (Sladek), 
    195 A.3d 197
    , 200 n.4 (Pa. 2018).
    3
    Because Claimant’s period of disability was less than 52 weeks, the parties agreed to rely
    on medical reports.
    2
    The WCJ also determined that Claimant’s incident participation report,
    based on information compiled from his volunteer fire company’s PennFIRS reports,
    met the PennFIRS reporting requirements in Section 301(f) of the Act. The Board
    also determined that Claimant’s incident participation report met the reporting
    requirements in Section 301(f).
    On appeal, Employer contends: (1) the Board erred by disregarding the
    plain language of Section 301(f) of the Act, which requires that a volunteer
    firefighter use only PennFIRS reports to prove exposure to a known Group 1
    carcinogen; (2) the WCJ erred in allowing testimony from the Pennsylvania Fire
    Commissioner regarding the legislative history of Section 301(f)’s requirements
    regarding the forms of proof for volunteer firefighter claims; (3) the Board erred by
    failing to require proof that Claimant’s specific cancer was directly related to
    firefighting exposure; and (4) the Board erred in sustaining a subrogation lien that
    was never properly established by competent admissible evidence. For the reasons
    that follow, we affirm.
    II. Background
    A. Claim Petition
    In September 2015, Claimant filed a claim petition under Section 108(r)
    of the Act alleging he sustained large B-cell NH-lymphoma as a result of exposure
    to IARC Group 1 carcinogens while working as a volunteer firefighter for Employer.
    Claimant sought full indemnity benefits from February 18, 2015, into the future.
    Claimant’s petition indicated he had additional employment. Employer filed a
    timely answer denying Claimant’s material allegations.
    3
    B. Evidence
    Claimant, 57 years old at the time of his deposition, testified that he is
    still a member of Goodwill Hose Company No. 3, a volunteer fire company in Bristol
    Borough. WCJ Op., 10/14/16, Finding of Fact (F.F.) No. 13a. He initially joined
    the company in 1976, and served as a firefighter, lieutenant, captain, assistant chief,
    deputy chief, and chief. 
    Id.
     Regardless of his rank, Claimant would respond to fires
    and be an active participant in the attack phase, interior firefighting and overhaul.
    
    Id.
     Claimant indicated he fought all types of fires, including houses, warehouses,
    industrial structures, commercial buildings, and cars. F.F. No. 13e. Claimant
    estimated he participated in 2,000 responses to incidents during his career. F.F. No.
    13p. He responded to his last fire call in January 2015. F.F. No. 13z.
    Claimant further testified that since 1979 he began working as a mail
    carrier for the U.S. Postal Service. F.F. No. 13s. During the 1980s, Claimant also
    worked as a part-time paid firefighter for Bristol Borough. F.F. No. 13u. He would
    fill in for absent regular full-time employees. 
    Id.
    In February 2015, Claimant’s doctors diagnosed him with large B-cell
    NH-lymphoma. F.F. No. 13w. Claimant began treating with Dr. Lebovic at that
    time. 
    Id.
     Claimant received six rounds of chemotherapy and continued his cancer
    treatment with Dr. Lebovic. F.F. No. 13x.
    On August 1, 2015, Claimant returned to work as a mailman without
    restrictions. F.F. No. 13y. Claimant received the same amount of pay as he did prior
    to the onset of his disability in February 2015. 
    Id.
    4
    In support of his claim, Claimant introduced a medical report from Dr.
    Guidotti, a physician board certified in internal medicine, pulmonary medicine and
    occupational medicine. F.F. No. 14a. Dr. Guidotti is also a well-recognized expert
    in toxicology and epidemiology as applied to the problems of occupational and
    environmental exposure, with particular reference to the occupational health of
    firefighters. 
    Id.
    Dr. Guidotti noted Claimant’s 39 years of firefighting. F.F. No. 14b.
    Claimant became acutely ill with diarrhea in early February 2015. 
    Id.
     His doctors
    diagnosed him with large B-cell NH-lymphoma on February 26, 2015. 
    Id.
    Dr. Guidotti explained that the IARC recognizes there is an association
    between large B-cell NH-lymphoma and the occupation of firefighter. F.F. No. 14e.
    In particular, Dr. Guidotti concluded that scientific studies establish there is a causal
    relationship between firefighting and large B-cell NH-lymphoma. 
    Id.
    Dr. Guidotti further stated that the IARC concluded, based upon
    medical and scientific studies, that firefighters have an elevated risk, “up to
    doubling,” for developing large B-cell NH-lymphoma. F.F. No. 14f. Dr. Guidotti
    noted there is strong evidence showing that large B-cell NH-lymphoma is associated
    with carcinogenic exposures known to occur during firefighting. F.F. No. 14h. TCE
    is a halogenated alkene compound formed by the reaction of organic material
    produced by burning and chlorine from sources such as polyvinyl chloride
    furnishings and products found in structures.        TCE, often present in smoke at
    structure fires, has been specifically associated with several types of large B-cell
    5
    NH-lymphoma. 
    Id.
     Dr. Guidotti stated the present “state of the art,” as indicated by
    the pertinent medical and scientific studies, is that the weight of the evidence favors
    the conclusion that constituents of fire smoke, particularly TCE, are associated with
    elevated risk of large B-cell NH-lymphoma. 
    Id.
    Consequently, Dr. Guidotti opined within a reasonable degree of
    medical certainty that Claimant’s cancer, a specific form of NH-lymphoma, arose
    out of his occupation as a firefighter. F.F. No. 14i. To that end, the doctor noted
    Claimant had no other risk factors for large B-cell NH-lymphoma. 
    Id.
    Claimant also introduced the deposition testimony of Pennsylvania Fire
    Commissioner Edward Mann (Fire Commissioner). Fire Commissioner testified the
    Governor appointed him to his post in 2000. F.F. No. 15a. Fire Commissioner has
    been involved in the fire service since he first joined a local volunteer fire department
    in 1977. 
    Id.
     He also served in the U.S. Air Force as a fire protection specialist for
    17 years and remained active in the fire service wherever he was stationed. 
    Id.
    As part of his responsibilities, Fire Commissioner serves as liaison
    between the fire service, the Governor’s Office, and the General Assembly. F.F. No.
    15b. Fire Commissioner is familiar with PennFIRS. F.F. No. 15c. The purpose of
    PennFIRS, which he described as Pennsylvania’s version of the National Fire
    Reporting System (NFIRS), is to collect data related to the cause of fires, fire
    damage, and the injuries to civilians and firefighters. 
    Id.
    6
    As part of PennFIRS, there is a report completed by a volunteer fire
    company or the fire company that responds to an incident or event. F.F. No. 15d.
    However, the report contains no evaluation of the carcinogens found at a particular
    fire scene. F.F. No. 15e.
    Fire Commissioner further testified that he is familiar with the
    occupational cancer literature from the IARC, the National Fire Protection Agency,
    and other groups concerning the hazards of firefighters’ exposure to smoke. F.F.
    No. 15g. According to the literature, one of the hazards of firefighting is exposure
    to carcinogens. 
    Id.
    Our review of Fire Commissioner’s deposition reveals he testified
    “there is no place on the PennFIRS reports for PennFIRS to log or catalog the
    carcinogens a particular firefighter would be exposed to fighting fires.”4 Dep. of
    Fire Commissioner Edward Mann (Mann Dep.), 4/22/14, at 14; R.R. at 361a
    (emphasis added). Fire Commissioner further testified there is no place in the
    PennFIRS reports to document the carcinogens a firefighter would be exposed to
    from smoke during the overhaul stage at a fire scene or from diesel exhaust. F.F.
    No. 15g. Summarizing, Fire Commissioner testified the PennFIRS reports contain
    no information specifically identifying the carcinogens to which any volunteer
    firefighter in Pennsylvania was exposed during his career. F.F. No. 14h.
    4
    We recognize the WCJ stated that Fire Commissioner “affirmed there is place [sic] on
    the PennFIRS reports for PennFIRS to log or catalog the carcinogens a particular firefighter would
    be exposed to fighting fires.” WCJ Op., 10/14/16, Finding of Fact No. 15g. However, given the
    WCJ’s further findings to the contrary, we construe this to be a typographical error or omission.
    7
    On cross-examination, Fire Commissioner indicated he is familiar with
    the language of Section 108(r) as it is documented by reports filed under PennFIRS.
    F.F. No. 15i. Fire Commissioner further testified that the purpose of the reporting
    language in Act 46 was to ensure that a firefighter making a cancer claim could prove
    that he actually attended the fire. F.F. No. 15j.
    In addition, the Commissioner explained on cross-examination that the
    only practical way to log exposure to specific carcinogens at the scene of a fire would
    be to put air monitoring equipment into the burning building, gather all the
    particulates from the atmosphere, and ship them to a chemist for analysis. F.F. No.
    15k. A review of the chemist’s report would reveal the type and amount of
    carcinogen present in the building. 
    Id.
     Fire Commissioner opined that although this
    could be done, it would be absolutely impractical and cost prohibitive. 
    Id.
    C. WCJ’s Decision
    Reviewing the evidence, the WCJ found Claimant’s testimony to be
    competent and persuasive, and he credited it in its entirety. F.F. No. 28. The WCJ
    found that Claimant established he engaged in firefighting activities for more than
    four years and that prior to his diagnosis of large B-cell NH-lymphoma, he did not
    show any signs of cancer. 
    Id.
     Claimant’s testimony established his exposure as a
    firefighter to IARC Group 1 carcinogens in fire smoke, soot, diesel exhaust and
    contaminated gear. 
    Id.
     Claimant first learned of the relationship between these
    exposures and cancer when he reviewed Dr. Guidotti’s report in September 2015.
    
    Id.
    8
    The WCJ also found that Claimant’s credibility was supported by Fire
    Commissioner’s testimony and documentation from Claimant’s volunteer fire
    company showing that it participates in PennFIRS. 
    Id.
     The WCJ further found that
    Claimant’s testimony supports the medical opinions of his expert, Dr. Guidotti. 
    Id.
    In addition, the WCJ not only credited, but afforded great weight to,
    Fire Commissioner’s testimony in its entirety. F.F. No. 30. In particular, the WCJ
    accepted Fire Commissioner’s testimony regarding: the purpose of the PennFIRS
    reporting requirements in Act 46; the fact that firefighters are exposed to carcinogens
    in the fire service, and the fact that exposures to carcinogens are not monitored at
    the fire scenes as part of either PennFIRS or NFIRS. 
    Id.
    With respect to the medical evidence, the WCJ accepted Dr. Guidotti’s
    report as more credible than the report of Employer’s medical expert, Dr. Howard
    M. Sandler (Dr. Sandler). F.F. No. 32. In particular, the WCJ rejected Dr. Sandler’s
    opinion that there was no reliable, scientifically derived evidence that Claimant’s
    time spent as a volunteer firefighter caused him to sustain exposure of any nature
    that had an impact on the development of his large B-cell NH-lymphoma. 
    Id.
    To the contrary, the WCJ accepted Dr. Guidotti’s opinion, expressed
    within a reasonable degree of medical certainty, that Claimant’s cancer arose out of
    his service as a firefighter and that the exposures associated with his service strongly
    contributed to the risk of his cancer. 
    Id.
     Dr. Guidotti, based on his review of the
    pertinent scientific and medical literature, opined that the current “state of the art” is
    that the weight of the evidence favors a conclusion that elements of fire smoke,
    9
    particularly TCE, are associated with an elevated risk of large B-cell NH-lymphoma.
    
    Id.
     More specifically, Dr. Guidotti stated that there is scientific evidence of an
    elevation in the risk of NH-lymphoma in general among firefighters, and that there
    is strong collateral evidence that the risk of large B-cell NH-lymphoma is
    particularly elevated. 
    Id.
     This collateral evidence specifically suggests that the
    cause within firefighting is exposure to halogenated alkenes and likely other
    carcinogens. 
    Id.
    Based on the evidence presented, the WCJ determined that Claimant’s
    large B-cell NH-lymphoma was covered under Section 108(r) of the Act, and that
    he was entitled to a presumption of compensability under Section 301(f) of the Act.
    F.F. No. 33a. The WCJ found that Claimant sustained direct exposure to Group 1
    carcinogens related to large B-cell NH-lymphoma in fire smoke, soot, diesel engine
    exhaust and contaminated gear during 39 years of service as a firefighter. F.F. No.
    33c.   The WCJ further found that Employer’s PennFIRS reports properly
    documented Claimant’s fire service. 
    Id.
    As a result of his work-related cancer, Claimant suffered a complete
    loss of earnings beginning in February 2015 and continuing through July 31, 2015.
    F.F. No. 35. Claimant returned to work without restrictions on August 1, 2015. 
    Id.
    Accordingly, the WCJ granted Claimant’s claim petition and awarded
    him total indemnity benefits beginning February 26, 2015, continuing through July
    31, 2015, at which time Claimant’s indemnity benefits were suspended. WCJ Order,
    10/14/16. The WCJ also awarded Claimant 10% interest on all deferred and unpaid
    10
    compensation. 
    Id.
     In addition, the WCJ ordered Employer to pay a medical services
    lien in the amount of $78,104 in favor of Independence Blue Cross (Highmark). 
    Id.
    D. Board Decision
    In its appeal to the Board, Employer argued the WCJ erred in
    determining that Claimant met his burden of proving direct exposure to Group 1
    carcinogens by documentation filed under PennFIRS.            Specifically, Employer
    asserted Claimant submitted no relevant PennFIRS reports into the record.
    Citing our decision in Steele v. Workers’ Compensation Appeal Board
    (Findlay Township), 
    155 A.3d 1173
     (Pa. Cmwlth. 2017), the Board recognized that
    PennFIRS documentation is required for Claimant to meet his burden of proof.
    However, in Steele, the claimant did not submit any reports into the record.
    Consequently, the Court did not address what information PennFIRS reports must
    establish.
    The Board further determined that nothing in the language of the Act
    precludes the use of expert testimony to establish a firefighter’s exposure to Group
    1 carcinogens. Thus, the Board reasoned that once a volunteer firefighter establishes
    his continuous service of four or more years of firefighting duties, he may satisfy his
    burden of establishing exposure to Group 1 carcinogens in the same manner as a
    career firefighter – through expert scientific evidence. See Bd. Op., 3/6/18, at 10.
    Here, the Board noted the WCJ found that Claimant used PennFIRS
    documentation establishing his fire service. 
    Id.
     This documentation consisted of an
    11
    incident participation report. See WCJ Hr’g, Notes of Testimony (N.T.), 3/30/16,
    Ex. C-4; Reproduced Record (R.R.) at 293a-346a. Claimant’s counsel identified this
    document as a report pulled from the PennFIRS computerized system. N.T., 3/30/16
    at 12; R.R. at 94a. The Board further observed that Employer did not object to
    Claimant’s assertion that the report is a PennFIRS document. Bd. Op. at 10.
    The Board recognized that Claimant’s reports detailed the number and
    type of incidents to which he responded. Id. at 11. From January 2003 through
    December 2014, Claimant responded to 380 incidents. Id. Claimant participated in
    grass fires, building and structure fires, trash and rubbish fires, cooking and chimney
    fires, and other types of fires including an incident involving a chemical reaction.
    Id.   The Board determined Claimant’s incident participation report met the
    PennFIRS requirement. Id.
    The Board rejected Employer’s argument that Claimant should have
    submitted a separate PennFIRS document for every single incident that detailed what
    possible carcinogens he was exposed to at the scene. Id. In particular, the Board
    cited the Fire Commissioner’s testimony that there is no place in a PennFIRS
    document or in the software to log in the carcinogens a firefighter encountered when
    fighting a fire. Id. More significantly, the Board noted the Fire Commissioner’s
    testimony that it would be too cumbersome, costly and impractical to add this
    requirement to PennFIRS reports. Id.
    The Board further observed that Dr. Guidotti’s report credibly
    established that the IARC recognized Claimant’s specific type of cancer as being
    12
    caused by exposure to Group 1 carcinogens while firefighting. Id. Dr. Guidotti’s
    report further established that Claimant’s direct exposure to Group 1 carcinogens
    while firefighting actually caused his large B-cell NH-lymphoma. Id. at 11-12.
    Summarizing, the Board determined that Claimant’s submission of
    PennFIRS documentation regarding his service as a volunteer firefighter, together
    with Dr. Guidotti’s testimony that direct exposure to Group 1 carcinogens while
    firefighting caused Claimant’s large B-cell NH-lymphoma, met Claimant’s burden
    of proof for establishing a compensable cancer claim under Section 108(r) of the
    Act. Bd. Op. at 12.
    In addition, the Board rejected Employer’s contention that the WCJ
    erred in finding that Trover Solutions5 (Trover)/Highmark was entitled to
    subrogation in the amount of $78,104 given the lack of evidence of an enforceable
    lien.       In so doing, the Board noted that the WCJ accepted testimony that
    Independence Blue Cross (Independence BC) asserted a lien. Id. The WCJ also
    found that Independence BC preserved its lien and was entitled to subrogation under
    the Act in the amount of $78,104. Id.
    However, the Board noted the WCJ erroneously named Independence
    BC rather than Highmark as the entity entitled to subrogation. Id. Nonetheless, the
    Board considered the WCJ’s mistake to be a mere typographical error and corrected
    it. Id. at 13.
    5
    Trover Solutions, formerly Healthcare Recoveries, Inc., provides subrogation and
    workers’ compensation recovery services to healthcare insurers across the country. WCJ’s Op.,
    Finding of Fact No. 27a.
    13
    As a final note, the Board determined that Trover/Highmark presented
    substantial, competent evidence supporting the WCJ’s finding that Highmark was
    entitled to the subrogation lien. Id. Trover/Highmark submitted a letter asserting a
    lien of $78,104, which the WCJ found to be recoverable. Id. Trover/Highmark also
    submitted a consolidated statement of benefits indicating Highmark paid $78,104 on
    Claimant’s behalf for his cancer treatment from March 10, 2015, to October 20,
    2015. Id. Employer petitions for review.6
    E. Supreme Court Decision in Sladek
    On appeal here, Employer relies significantly on our decision in City of
    Philadelphia Fire Department v. Workers’ Compensation Appeal Board (Sladek),
    
    144 A.3d 1011
     (Pa. Cmwlth. 2018), rev’d, 
    195 A.3d 197
     (Pa. 2018), where we held
    that the claimant could not recover benefits under Section 108(r) because he failed
    to prove his malignant melanoma was a type of cancer caused by exposure to a
    Group 1 carcinogen.
    In Sladek, a case of first impression, the Board interpreted Section
    108(r) of the Act broadly and reasoned that the General Assembly established a
    causal relationship between any Group 1 carcinogen and any cancer. Reading
    6
    Our review is limited to determining whether the WCJ’s findings of fact were supported
    by substantial evidence, whether an error of law was committed or whether constitutional rights
    were violated. Phoenixville Hosp. v. Workers’ Comp. Appeal Bd. (Shoap), 
    81 A.3d 830
     (Pa.
    2013).
    14
    Section 108(r) in conjunction with Section 301(e),7 the Board determined that the
    claimant need not prove he was exposed to a particular Group 1 carcinogen or that
    the carcinogens to which he was exposed specifically caused his melanoma.
    In reversing the Board on appeal, we reasoned that the “caused by”
    language in Section 108(r) of the Act cannot be simply disregarded. To that end, we
    determined that the claimant bore the burden of establishing that his malignant
    melanoma was a type of cancer caused by the Group 1 carcinogens to which he was
    exposed in the workplace. See Sladek, 144 A.3d at 1021-22.
    In October 2018, well after parties filed their respective briefs in this
    appeal, the Supreme Court handed down its decision in Sladek. See City of Phila.
    Fire Dep’t v. Workers’ Comp Appeal Bd. (Sladek), 
    195 A.3d 197
     (Pa. 2018). In a
    plurality decision reversing this Court, the Supreme Court first addressed the
    causation requirement in Section 108(r) of the Act. In interpreting the language of
    Section 108(r), the Court stated (with emphasis by underline added):
    The express language of Section 108(r), namely that
    the claimant has a ‘cancer … which is caused by exposure
    to a known (Group 1) carcinogen’ clearly imposes an
    initial burden of causation on the claimant. Importantly,
    however, the provision only requires the claimant to
    7
    Section 301(e) of the Act, 77 P.S. §413, which applies to occupational diseases generally,
    provides (with emphasis added):
    If it be shown that the employe, at or immediately before the date
    of disability, was employed in any occupation or industry in which
    the occupational disease is a hazard, it shall be presumed that the
    employe’s occupational disease arose out of and in the course of his
    employment, but this presumption shall not be conclusive.
    15
    establish a general causal link between the claimant’s type
    of cancer and a Group 1 carcinogen. In other words, the
    claimant must produce evidence that it is possible that the
    carcinogen in question caused the type of cancer with
    which the claimant is afflicted. It does not require the
    claimant to prove that the identified Group 1 carcinogen
    actually caused claimant’s cancer. Section 108(r)
    embodies a legislative acknowledgement that firefighting
    is a dangerous occupation that routinely exposes
    firefighters to Group 1 carcinogens that are known to
    cause various types of cancers. The ‘general causation’
    requirement under Section 108(r) constitutes a recognition
    that different types of cancers have different etiologies and
    it weeds out claims for compensation for cancers with no
    known link to Group 1 carcinogens. The burden imposed
    by Section 108(r) is not a heavy burden.
    In this regard, epidemiological evidence is clearly
    relevant and useful in demonstrating general causation.
    Epidemiology deals with, inter alia, the identification of
    potentially causative associations in various populations
    between possible causative agents and the resulting
    incidence of particular diseases and seeks to generalize
    those results. In so doing, epidemiology may provide
    ‘useful information as to whether there is a relationship
    between an agent and a disease and, when properly
    interpreted, can provide insight into whether the agent can
    cause the disease.’ See, e.g., Blum by Blum v. Merrell
    Dow Pharm., Inc., 
    705 A.2d 1314
     1323-24 (Pa. Super.
    1997), aff’d sub nom. Blum ex rel. Blum v. Merrell Dow
    Pharm., Inc., [
    764 A.2d 1
     (Pa. 2000)] and abrogated on
    other grounds by Trach v. Fellin, 
    817 A.2d 1102
     (Pa.
    Super. 2003). Given its focus on identifying generalized
    causal relationships between potential causative agents
    and the resulting incidence of disease, epidemiology’s
    focus on statistical analysis may be uniquely suited to
    illuminate whether there is a general causal relationship
    between types of cancer and Group 1 carcinogens.
    Sladek, 195 A.3d at 208-09 (footnotes omitted).
    16
    The Supreme Court also examined the standard of proof required to
    rebut the presumption of compensability in Section 301(f) of the Act. Section 301(f)
    provides (with emphasis added):
    Compensation pursuant to cancer suffered by a
    firefighter shall only be to those firefighters who have
    served four or more years in continuous firefighting duties,
    who can establish direct exposure to a carcinogen referred
    to in section 108(r) relating to cancer by a firefighter and
    have successfully passed a physical examination prior to
    asserting a claim under this subsection or prior to engaging
    in firefighting duties and the examination failed to reveal
    any evidence of the condition of cancer. The presumption
    of this subsection may be rebutted by substantial
    competent evidence that shows that the firefighter’s cancer
    was not caused by the occupation of firefighting. Any
    claim made by a member of a volunteer firefighting
    company shall be based on evidence of direct exposure to
    a carcinogen referred to in section 108(r) as documented
    by reports filed pursuant to [PennFIRS] and provided that
    the member’s claim is based on direct exposure to a
    carcinogen referred to in section 108(r). …
    77 P.S. §414.
    Reviewing the language in Section 301(f), the Court stated (with
    emphasis by underline added):
    While epidemiological evidence supports the
    burden of establishing general causation, where the
    claimant has established an entitlement to the evidentiary
    presumption of compensability under Section 301(f), such
    epidemiological evidence is not sufficient to rebut the
    presumption. As the language of Section 301(f) plainly
    provides, the evidence required to rebut this presumption
    must show that ‘the firefighter’s cancer was not caused by
    the occupation of firefighting.’ 77 P.S. §414. The phrase
    the ‘firefighter’s cancer’ refers to the claimant’s cancer,
    17
    and thus requires the employer to sustain its burden of
    proof by demonstrating (1) the specific causative agent of
    claimant’s cancer, and (2) exposure to that causative agent
    did not occur as a result of his or her employment as a
    firefighter. In other words, the language of Section 301(f)
    requires the employer to produce a medical opinion
    regarding the specific, non-firefighting related cause of
    claimant’s cancer.
    The nature of the evidence necessary to establish an
    ‘occupational disease’ under Section 108(r) of the Act
    differs markedly from the nature of the evidence that an
    employer must present to rebut the evidentiary
    presumption of employment-related causation. Unlike the
    proof required under Section 108(r), the employer may not
    rebut the evidentiary presumption with generalized
    epidemiological evidence that claimant has a type of
    cancer that may (or may not) possibly be caused by a
    Group 1 carcinogen. As indicated, epidemiological
    studies merely identify statistical associations between
    disease and potentially causative agents in broad
    populations, and thus do not provide any evidence
    demonstrating the specific cause of a particular claimant’s
    cancer. To reach the stage of the proceedings at which the
    employer attempts to rebut the presumption of
    employment-related causation, the claimant has already
    carried his or her Section 108(r) burden of proof that his
    or her cancer is a type that may be caused by a Group 1
    carcinogen. The employer may not rebut the evidentiary
    presumption merely by revisiting this determination and
    challenging its accuracy. At the rebuttal stage, the issue
    relates not to ‘types of cancer’ relative to potential
    carcinogens, but rather requires proof of [sic] that the
    cancer from which the claimant suffers was not caused by
    his occupation as a firefighter.
    Sladek, 195 A.3d at 209-10 (emphasis added).
    In Sladek, the Supreme Court noted both the claimant and the employer
    presented epidemiological evidence regarding causation. The Court reasoned that
    18
    the parties’ epidemiological evidence may be outcome determinative on remand
    only as to the issue of whether the claimant can carry his evidentiary burden of proof
    to establish an occupational disease under Section 108(r). Id. at 210. However, if
    the claimant met his initial burden of general causation under Section 108(r), the
    employer’s epidemiological evidence “would be insufficient to rebut the evidentiary
    presumption.” Id.
    Mindful of the Supreme Court’s decision in Sladek, we address the
    merits of Employer’s petition for review.
    III. Discussion
    A. PennFIRS Reporting Requirements
    1. Argument
    a. Interpretation of Section 301(f)
    Employer first contends the Board erred as a matter of law by
    disregarding the plain language of 301(f) of the Act, which requires that a volunteer
    firefighter use only PennFIRS reports to establish direct exposure to a known Group
    1 carcinogen. Employer asserts Section 301(f) specifically differentiates between
    volunteer firefighters such as Claimant and career professional firefighters for
    several important reasons, including the fact that certain members of volunteer
    departments may engage solely in non-firefighting activities such as traffic control
    or social/fundraising events. Another distinction, Employer argues, is based on the
    much greater number of responses by career firefighters in an urban setting to
    structure fires. For example, in the present case, Claimant responded to a rough
    average of only four structure fires per year.
    19
    In short, Employer contends Section 301(f) requires that a volunteer
    firefighter seeking compensation for a cancer claim under Section 108(r) produce
    concrete evidence of direct exposure to a known Group 1 carcinogen and that the
    exclusive method of proving such exposure is documentation in PennFIRS reports.
    Citing our decision in Steele, Employer asserts the PennFIRS
    requirement cannot be brushed aside or satisfied by mere evidence that a volunteer
    firefighter responded to fires. In Steele, we recognized that the language of Section
    301(f) clearly requires that volunteer firefighters provide evidence of direct exposure
    to carcinogens as documented by PennFIRS reports. Consequently, we determined
    that lay testimony from the claimant and two firefighters regarding the decedent’s
    exposure to carcinogens did not satisfy that requirement.
    In Steele, we also noted the principle of statutory construction stating
    that when the words of a statute are clear and free from all ambiguity, the letter of
    law may not be disregarded under the pretext of pursuing its spirit. 1 Pa. C.S.
    §1921(b). Nonetheless, we recognized that the Board augmented its discussion of
    the plain language of Section 301(f) by reviewing the legislative history of Act 46.
    Reviewing the changes made to the original bill previously vetoed by the Governor
    and the comments of the bill’s sponsor, we noted that the legislative history of Act
    46 confirmed an intent to treat volunteer firefighters differently from career
    firefighters. In particular, we observed that in cases where the amount of actual
    exposure of the volunteer firefighter is disputed, the conflict is to be resolved by
    objective, documentary evidence of exposure to carcinogens in the form of
    PennFIRS reports. In Steele, we concluded that the Board correctly determined the
    20
    claimant did not and could not establish her late husband’s direct exposure to Group
    1 carcinogens through lay witness testimony.
    Here, Employer asserts, when confronted with the identical issue, the
    Board disregarded the holding in Steele and declared that the language of the Act
    does not preclude the use of expert testimony to establish exposure to a Group 1
    carcinogen. Reasoning that Steele did not address the issue of what information
    needed to be included in a PennFIRS report, the Board decided that if a claimant
    could establish his presence at fire scenes through PennFIRS reports, testify as to the
    smoke and other substances encountered at the fire scenes, and then get an expert to
    opine that his cancer resulted from exposures to carcinogens at those fire scenes, the
    claimant met the requirements in Section 301(f).
    Employer argues the Board’s decision is nothing more than an
    acknowledgement that applying the clear and unambiguous language in Section
    301(f) would have resulted in a denial of Claimant’s claim, a result which the Board
    was unwilling to endorse. Employer asserts that if the legislature intended for a
    claimant to prove Group 1 exposures by medical and scientific testimony, it would
    have so directed. Similarly, if the legislature intended for PennFIRS reports to only
    show presence at fire scenes, it would have so stated. Rather, Employer maintains
    that by mandating the use of PennFIRS reports as the only acceptable proof of
    exposure to Group 1 carcinogens, the legislature did in fact prohibit any other means
    of proving such exposures.
    21
    Here, Employer asserts, Claimant did not submit a single PennFIRS
    report.   Rather, Claimant submitted a log sheet noting the calls to which he
    responded. However, the log sheet did not indicate the duration of any call or the
    role Claimant filled on the call. Most importantly, Employer argues, the log sheet
    did not indicate whether Claimant experienced any exposure, let alone a direct
    exposure, to a Group 1 carcinogen. In sum, Employer alleges Claimant’s log sheet
    may have been sufficient to show his mere presence at a fire call, but that is not the
    standard imposed by Section 301(f). Rather, Employer asserts, the applicable
    standard requires that designation of exposure to Group 1 carcinogens must appear
    in a PennFIRS report.
    b. Fire Commissioner’s Testimony
    Employer also contends the WCJ erred in allowing Fire Commissioner
    to testify regarding the legislative history of Act 46 and the wisdom of the General
    Assembly’s decision to require a different form of proof for volunteer firefighter
    claims as opposed to career firefighter claims. Employer asserts Claimant presented
    Fire Commissioner’s lay testimony in the hope of circumventing the PennFIRS
    reporting requirement.
    More particularly, Employer argues Fire Commissioner’s testimony
    that the intent of the PennFIRS reporting requirement was not to report carcinogens
    encountered by firefighters was in direct conflict with comments from the sponsor
    of Act 46.
    22
    Before the House of Representatives on the third consideration of HB
    797, when asked by another Representative why the use of PennFIRS was being
    proposed, and how the volunteer fire companies will use it, State Representative
    Frank A. Farry, the sponsor of the legislation, stated:
    PennFIRS is the State fire reporting system, which has
    been in place for approximately 8 years. During the
    negotiations regarding this bill, it was determined there
    needed to be a method by which volunteer firefighters can
    file a claim under the rebuttable presumption provision.
    Because this standard provided for career firefighters
    could not be applied to volunteers, it was determined the
    utilization of the PennFIRS system would serve to
    document that the volunteer firefighter was present at an
    incident where a known carcinogen was present. Mr.
    Speaker, my legislation provides a standard for volunteer
    firefighters and departments to document as potential
    evidence that the volunteer firefighter was directly
    engaged in firefighting duties at an incident where a
    known carcinogen was documented to be present and the
    volunteer firefighter was directly exposed to a class 1
    carcinogen.
    Mr. Speaker, HB 797 provides a built-in incentive
    for volunteer fire companies to utilize the PennFIRS
    system and will push for them to provide thorough
    information when filling out their PennFIRS reports. The
    majority of stakeholders in this legislation – local
    governments, the insurance industry, and the fire service –
    have all agreed to work together to develop best practices
    for documenting exposures, and we all hope to develop
    risk management strategies to reduce exposures and
    ultimately lower the number of cases of cancer. PennFIRS
    is the frontline tool to document these incidents.
    Pa. Legis. Journal – House, June 21, 2011 at 1338 (emphasis added).
    23
    Employer notes Fire Commissioner’s testimony that the intent of the
    PennFIRS reporting requirement is not to document the specific carcinogens
    encountered by firefighters, and that there is currently no standard operating
    procedure used to measure carcinogens at fires. However, Employer points out Fire
    Commissioner never suggested to the General Assembly or anyone else that the
    PennFIRS reporting requirements be removed from the bill. Furthermore, Fire
    Commissioner acknowledged there are places on the PennFIRS form to report
    exposure to diesel fuel emissions, asbestos, toxic gases and other hazardous
    materials.
    Summarizing, Employer alleges Fire Commissioner’s lay testimony as
    to legislative intent behind Act 46 was merely his opinion and is not competent
    evidence.    Fire Commissioner admitted he was not privy to the legislative
    formulation or discussion of HB 797, which became Act 46 during Governor Tom
    Corbett’s administration. See Mann Dep. at 22-23; R.R. at 369a-70a. Therefore,
    Employer maintains that Fire Commissioner’s testimony as to the legislative intent
    for including the PennFIRS reporting requirements in Act 46 should not have formed
    the basis of any of the WCJ’s Findings of Fact.
    2. Analysis
    a. Interpretation of Section 301(f)
    To begin our analysis, we note that a firefighter-claimant asserting a
    cancer claim under Section 108(r) of the Act, 77 P.S. §27.1(r), must first establish
    that he was diagnosed with a type of cancer possibly caused by one or more IARC
    Group 1 carcinogens. Sladek. This general causation requirement does not impose
    24
    a heavy burden on a claimant. Id. To that end, our Supreme Court recognized that
    Section 108(r) embodies a legislative acknowledgement that firefighting is a
    dangerous occupation that routinely exposes firefighters to Group 1 carcinogens. Id.
    Section 301(f) then provides an evidentiary presumption of entitlement
    to compensation for a claimant who can show he: (1) served four or more years in
    continuous firefighting duties; (2) had direct exposure to a Group 1 carcinogen; and
    (3) passed a physical examination prior to asserting a claim or prior to engaging in
    firefighter duties after undergoing a physical examination that revealed no evidence
    of cancer. 77 P.S. §414.
    Thereafter, Section 301(f) imposes an additional requirement on
    volunteer firefighters. As discussed above, Section 301(f) provides in pertinent part
    that any claim made by a member of a volunteer firefighting company “shall be
    based on evidence of direct exposure to a carcinogen referred to in [S]ection 108(r)
    as documented by reports filed pursuant to [PennFIRS] and provided that the
    member’s claim is based on direct exposure to a carcinogen referred to in Section
    108(r).” 77 P.S. §414 (emphasis added).
    The crux of Employer’s argument is that Section 301(f) requires that a
    volunteer firefighter use only PennFIRS documentation to establish direct exposure
    to a Group 1 carcinogen by documenting not only his presence at an incident, but
    also the carcinogen or carcinogens he encountered at the incident. In light of the
    Supreme Court’s decision in Sladek, this is an overly restrictive interpretation of the
    25
    language in Section 301(f), which would lead to a result that would be unreasonable
    and essentially impossible to execute.
    Initially, we note, nothing in the language of Section 301(f) explicitly
    requires volunteer fire companies to identify and document the specific Group 1
    carcinogens encountered at a fire incident in PennFIRS reports in order for the
    evidentiary presumption of compensability to apply to their volunteer firefighters.
    When the words of a statute are not explicit, the intention of the General Assembly
    may be determined by considering, among other things, the object to be obtained,
    the consequences of a particular interpretation, and the contemporaneous legislative
    history. 1 Pa. C.S. §1921(c)(4), (6), (7).
    In Steele, we reviewed the legislative history of Act 46. We noted that
    the sponsor of the legislation, Representative Farry, explained that “utilization of the
    PennFIRS system would serve to document that a volunteer firefighter was present
    at an incident where a known carcinogen was present.” See Pa. Legis. Journal –
    House, June 21, 2011 at 1338 (emphasis added). To that extent, we observed that
    the legislative history of Act 46 confirmed its intent to treat volunteer firefighters
    differently than career firefighters. Steele. In Steele, the parties disputed the actual
    exposure of the volunteer firefighter. Id.
    However, contrary to Employer’s assertion, our decision in Steele does
    not support an interpretation of Section 301(f) that would require all volunteer fire
    companies in Pennsylvania to identify and document the Group 1 carcinogens
    present at every incident. Rather, we held that in light of the PennFIRS requirement,
    26
    the claimant, the wife of a deceased firefighter, could not establish his direct
    exposure to Group 1 carcinogens merely by using lay testimony absent any
    documentation of his presence at an incident where Group 1 carcinogens were
    present. See Steele, 155 A.3d at 1178.
    In reviewing the language of Section 301(f), we recognize that it
    imposes the same general causation requirement on both career and voluntary
    firefighters to establish “direct exposure to a carcinogen referred to in [S]ection
    108(r).” 77 P.S. §414. Notably, Section 301(f) does not require career firefighters
    to identify and document the carcinogens encountered at every incident. Rather, a
    career firefighter may establish direct exposure to a Group 1 carcinogen by evidence
    of his occupational exposure to fire smoke, soot, diesel exhaust, and other hazardous
    substances such as asbestos, and expert medical/scientific evidence identifying the
    Group 1 carcinogens present in those substances. See, e.g., Caffey v. Workers’
    Comp. Appeal Bd. (City of Philadelphia), 
    185 A.3d 437
     (Pa. Cmwlth. 2018) (career
    firefighter’s testimony of occupational exposure to fire smoke, soot and diesel
    exhaust, combined with expert medical testimony as to causal relationship between
    bladder cancer and firefighting exposures to these substances, could support an
    award of medical benefits under Sections 108(r) and 301(f) of the Act).
    It would be unreasonable to interpret the identical language in Section
    301(f), which specifically applies to Pennsylvania’s volunteer fire companies, as
    imposing a more technical and difficult reporting standard than that required for
    career fire departments. Common sense dictates that there are many volunteer fire
    companies across the Commonwealth that lack the resources that would be needed
    27
    for the scientific identification and documentation of the Group 1 carcinogens
    encountered by their firefighters at each incident.
    We stress that the Supreme Court interpreted Section 108(r) as
    embodying “a legislative acknowledgement that firefighting is a dangerous
    occupation that routinely exposes firefighters to Group 1 carcinogens that are known
    to cause various types of cancers.” Sladek, 
    195 A.3d 208
     (emphasis added).
    Essentially, the purpose of the causation requirement in Section 108(r) is to weed
    out claims for compensation “for cancers with no known link to Group 1
    carcinogens.” 
    Id.
     (emphasis added).
    Thus, in accord with our Supreme Court’s recent interpretation in
    Sladek of the respective evidentiary burdens imposed by Sections 108(r) and 301(f)
    of the Act, combined with the credible evidence presented in this case, we do not
    interpret the reporting requirements in Section 301(f) as imposing such a disparate
    and difficult burden on Pennsylvania’s volunteer fire companies as that asserted by
    Employer. To that end, we recognize Fire Commissioner’s credible testimony
    regarding the impracticability of requiring volunteer fire companies to document
    each firefighter’s exposure to the specific Group 1 carcinogens encountered at each
    fire event.
    Rather, viewing the record in this case in its entirety, and in accord with
    Sladek, we are convinced that the only reasonable and practicable interpretation of
    the PennFIRS reporting requirement in Section 301(f) is to document a volunteer
    firefighter’s presence at a type of fire where firefighters are routinely exposed to
    28
    Group 1 carcinogens known to cause various types of cancers. Sladek. Such an
    interpretation gives proper effect to all the provisions in Section 301(f) without
    imposing a requirement on a volunteer firefighter-claimant that is unreasonable,
    impracticable and, for all intents and purposes, impossible of execution.
    Here, Claimant’s Exhibit C-04 (Report From Goodwill Hose Company
    No. 3 and Fire Responses 2001-20), referred to as Claimant’s incident participation
    report, R.R. at 293a-346a, details Claimant’s participation in responses to incidents
    as a volunteer firefighter with Goodwill Hose Company. The report describes the
    type of incident (such as cooking fire, electrical, building fire, false alarm). The
    report also denotes Claimant’s participation at that incident with an asterisk. In
    introducing Exhibit C-04, Claimant’s counsel stated that the information in the
    report was pulled from PennFIRS documentation. N.T., 3/30/16 at 12; R.R. at 94a.
    The report documents Claimant’s participation in fire responses between January 1,
    2003 and December 31, 2014. 
    Id.
    Because Claimant’s incident participation report was compiled using
    PennFIRS data entered into the PennFIRS computerized system by his volunteer fire
    company, we hold that Claimant satisfied the PennFIRS reporting requirement in
    Section 301(f) of the Act. Claimant’s report denotes his participation in incidents
    involving exposure to fire smoke likely to contain TCE and other Group 1
    carcinogens causally related to the development of large B-cell NH-lymphoma. This
    is sufficient to satisfy the PennFIRS reporting requirements in Section 301(f).
    Consequently, we reject Employer’s contention that Section 301(f) required
    29
    Claimant to print out the actual PennFIRS reports entered by his volunteer fire
    company over the course of his fire service.
    b. Fire Commissioner’s Testimony
    Essentially, Employer contends Fire Commissioner’s lay testimony
    was not competent evidence of the legislative intent for including the PennFIRS
    reporting requirements in Section 301(f) and therefore cannot support the WCJ’s
    findings. We disagree.
    In order to test whether the evidence relied upon constitutes substantial
    evidence in support of a finding, a reviewing court must determine whether the
    evidence admitted is competent, and, if so, whether the evidence is sufficient to
    support the administrative finding. Gibson v. Workers’ Comp. Appeal Bd. (Armco
    Stainless & Alloy Prod.), 
    861 A.2d 938
     (Pa. Cmwlth. 2004). When the evidence is
    competent and sufficient, the finding is supported by substantial evidence. 
    Id.
    Generally, issues concerning the admission and exclusion of evidence
    fall within the sound discretion of the administrative tribunal and will not be reversed
    on appeal absent a finding of an abuse of discretion. Gibson (citing Morrison v.
    Dep’t of Pub. Welfare, Office of Mental Health, 
    646 A.2d 565
     (Pa. 1994)).
    Nevertheless, we recognize the fundamental rule of law that witnesses must have
    first-hand knowledge of the subject on which they are testifying in order for that
    testimony to be admissible. Gibson.
    30
    Pennsylvania Rule of Evidence 701, relating to opinion testimony by
    lay witnesses, provides:
    If a witness is not testifying as an expert, testimony in the
    form of an opinion is limited to one that is:
    (a) rationally based on the witness’s perception;
    (b) helpful to clearly understanding the witness’s
    testimony or to determining a fact in issue; and
    (c) not based on scientific, technical, or other specialized
    knowledge within the scope of Rule 702.
    Pa.R.E. 701.
    Throughout its history, our Supreme Court permitted individuals, not
    qualified as experts, but possessing experience or specialized knowledge, to testify
    regarding technical matters that may have been thought to be within the exclusive
    province of experts. Gibson. However, a witness may not testify concerning a
    matter unless evidence is introduced sufficient to support a finding that the witness
    has personal knowledge of the matter. Pa.R.E. 602. Personal knowledge may be
    established by the witness’s own testimony. 
    Id.
    In the present case, the WCJ found Fire Commissioner’s testimony to
    be persuasive and credible in its entirety. F.F. No. 30. Fire Commissioner testified
    regarding his extensive experience in the fire service as a member of several
    volunteer fire companies and as a fire protection specialist for the U.S. Air Force.
    F.F. No. 15a; Mann Dep. at 7-8; R.R. at 354a-55a. Fire Commissioner’s duties
    include responsibility for the State Fire Academy and providing training to 2,000
    31
    fire departments in 67 counties. Fire Commissioner also serves as liaison between
    the fire service, the Governor’s Office, and the General Assembly. F.F. No. 15b;
    Mann Dep. at 8; R.R. at 355a.
    In particular, the WCJ afforded great weight to Fire Commissioner’s
    testimony regarding the purpose of the PennFIRS reporting requirements. F.F. No.
    30. Fire Commissioner stated he was appointed to office in 2000, prior to the
    PennFIRS rollout in late 2001/early 2002. Mann Dep. at 46; R.R. at 393a.
    The WCJ also credited Fire Commissioner’s testimony that firefighters
    are exposed to carcinogens in the fire service and that exposure to carcinogens at fire
    scenes is not evaluated as part of PennFIRS or NFIRS. F.F. No. 30. The WCJ also
    found that Fire Commissioner’s credibility was “supported by his knowledge of the
    purpose of Act 46.” 
    Id.
    On cross-examination, Fire Commissioner testified that the purpose of
    the Act 46 reporting requirement is to record that a firefighter making the claim
    could prove that he actually attended the fire. F.F. No 15j; Mann Dep. at 27-28;
    R.R. at 374a-75a. Based on discussions he had with various other professionals in
    the fire service, Fire Commissioner believed the only real purpose of the PennFIRS
    reporting requirements was to establish that an individual actually attended the fire.
    Mann Dep. at 29-30; R.R. at 376a-77a. Any other type of recordkeeping in a
    volunteer fire company would be “hit and miss at best.” Mann Dep. at 30; R.R. at
    377a.
    32
    Regarding the documentation of carcinogens present at fire scenes, Fire
    Commissioner testified that in his years of fire service, he did not recall any efforts
    by anyone to evaluate carcinogens present at a particular fire event. F.F. No. 15e;
    Mann Dep. at 9-10; R.R. at 356a-57a. Fire Commissioner stated there has never
    been anything done by a fire department during the regular course of firefighting to
    ascertain what carcinogens are in the smoke while fighting a fire. Mann Dep. at 10;
    R.R. at 357a.
    Fire Commissioner further testified there is no place in the PennFIRS
    reports to log or catalog the carcinogens to which a particular firefighter would be
    exposed during a fire. F.F. No. 15g; Mann Dep. at 14; R.R. at 361a. Similarly, there
    is no place in PennFIRS to catalog the specific carcinogens to which a firefighter
    would be exposed to from smoke during overhaul or from diesel exhaust. F.F. No.
    15g; Mann Dep. at 14; R.R. at 361a. Therefore, Fire Commissioner testified that
    PennFIRS reports could not be used to specifically identify the carcinogens to which
    any volunteer firefighter in Pennsylvania was exposed. F.F. No. 15h; Mann Dep. at
    15; R.R. at 362a.
    On cross-examination, Fire Commissioner explained that the only
    practical way to accurately identify and record the specific carcinogens at a fire scene
    would be to put air monitoring equipment in the building to gather all the
    particulates. F.F. No. 15k; Mann Dep. at 44; R.R. at 391a. The fire company would
    then need to ship the samples to a chemist for an analysis.            Thereafter, the
    carcinogens present could be listed in an incident report.             Although Fire
    33
    Commissioner acknowledged this could be done, he testified it would be cost
    prohibitive and impractical. F.F. No. 15k; Mann Dep. at 44-45; R.R. at 391a-92a.
    Further, although PennFIRS reports include a section to log hazardous
    materials encountered at fire scenes, Fire Commissioner testified this section was
    intended to report hazardous material spills or releases, and what remediation steps
    were taken. Mann Dep. at 38; R.R. at 385a. A hazardous material incident is
    reported differently than a fire incident. Mann Dep. at 38-43; R.R. at 385a-90a.
    There is a hazardous material guidebook with a four-digit code that is used world-
    wide to identify hazardous materials. Mann Dep. at 40; R.R. at 387a. As discussed
    above, however, there is currently no place in a PennFIRS report to catalog the
    carcinogens to which a particular firefighter would be exposed during firefighting or
    overhaul. Mann Dep. at 14; R.R. at 361a.
    In sum, the WCJ cited Fire Commissioner’s considerable experience
    with the PennFIRS reporting requirements as both a member of a volunteer fire
    company and his service as Pennsylvania’s Fire Commissioner, as factors that
    strengthened his credibility. F.F. No. 30. The WCJ also specifically credited Fire
    Commissioner’s testimony regarding the purpose of Act 46. 
    Id.
            In light of Fire
    Commissioner’s extensive knowledge of the operation of volunteer fire companies,
    the PennFIRS software, and the history of Act 46, we discern no abuse of discretion
    in the WCJ’s determination that Fire Commissioner’s testimony constituted
    competent evidence of the limited purpose that the PennFIRS reporting requirements
    in Section 301(f) of the Act were realistically intended to serve. Gibson; Morrison.
    Further, no abuse of discretion is discerned because the Fire Commissioner’s
    34
    testimony was competent evidence of the practical consequences of competing
    interpretations of the PennFIRS reporting requirements.
    B. Required Proof of Causation
    1. Argument
    a. General Causation Requirement
    Employer, unfortunately relying on this Court’s now-superseded
    interpretation of Section 108(r) in Sladek, argues that even if Claimant satisfied the
    Act 46 requirements for volunteer firefighters, the Board erred in determining
    Claimant had a compensable cancer claim under Section 108(r) of the Act because
    Claimant failed to prove his large B-cell NH-lymphoma could be caused by exposure
    to a Group 1 carcinogen. To become eligible for compensation for an occupational
    disease under Section 108 of the Act, 77 P.S. §27.1, a claimant must prove a
    disability resulting from a disease enumerated in Section 108 and that the disease
    arose out of and was related to the claimant’s employment. Allingham v. Workers’
    Comp. Appeal Bd. (City of Pittsburgh), 
    659 A.2d 49
     (Pa. Cmwlth. 1995).
    Noting Claimant filed his claim petition under Section 108(r) of the
    Act, Employer asserts Claimant must first meet the definition of “occupational
    disease” under Section 108(r), which provides (with emphasis added):
    Cancer suffered by a firefighter which is caused by direct
    exposure to a carcinogen which is recognized as a Group
    1 carcinogen by the [IARC].
    77 P.S. §27.1(r).
    35
    Employer argues Clamant failed to show that he suffers from a specific
    cancer causally connected to firefighting. Employer thus maintains Claimant is not
    eligible for compensation under the Act. More specifically, Employer contends that
    in order to trigger the presumption of credibility in Section 301(f) of the Act, 77 P.S.
    §414, Claimant must establish his cancer was caused by exposure to a Group 1
    carcinogen.
    With respect to Claimant’s four-prong burden of proof under Sections
    108(r) and 301(f), Employer conceded Claimant met the first two prongs by
    establishing (1) four or more years of firefighting service and (2) that he had cancer.
    However, Employer asserts Claimant failed to establish (3) that his cancer was a
    type of cancer caused by exposure to a Group 1 carcinogen found in the firefighter’s
    requirement.     Employer further alleges Claimant failed to establish (4) direct
    exposure to a Group 1 carcinogen as documented by PennFIRS reports.
    b. Competency of Claimant’s Medical Evidence
    Employer next alleges Dr. Guidotti’s opinion on the precise issue of
    whether a Group 1 carcinogen caused Claimant’s large B-cell NH-lymphoma was
    equivocal and lacked factual support in the record. Employer asserts Dr. Guidotti
    did not identify the records or documents he reviewed when he formed his opinion
    as to the cause of Claimant’s lymphoma. Furthermore, Dr. Guidotti authored his
    report on the causation of Claimant’s cancer in September 2015. As such, Dr.
    Guidotti’s report preceded Claimant’s deposition, which was taken in October 2015.
    Thus, Employer alleges, Dr. Guidotti did not hear or read Claimant’s testimony
    before drafting his report on causation.
    36
    In addition, Dr. Guidotti did not mention whether he reviewed
    Claimant’s incident participation log, the document Claimant offered to prove direct
    exposure. Therefore, Employer argues Dr. Guidotti formed a medical causation
    opinion without any indication of the number or type of fires to which Claimant
    responded and without any indication as to what carcinogens Claimant encountered
    while on duty. Rather, Dr. Guidotti based his causation opinion on facts Claimant
    related in his affidavit.
    Moreover, Dr. Guidotti’s report included incidents such as a fire at Dow
    Chemicals and a fire where pesticides were illegally stored in a crawlspace. Because
    Claimant did not testify as to either incident in his affidavit or deposition, Employer
    alleges the source of Dr. Guidotti’s information about these incidents was unclear
    and therefore his testimony lacked a proper foundation in the record.
    Regarding general causation, Employer asserts Dr. Guidotti
    acknowledged that the causal relationship between firefighting and large B-cell NH-
    lymphoma is only now coming under study. As such, the doctor indicated that the
    evidence is too sparse to be conclusive and thus requires the use of an inference.
    Consequently, Employer alleges Claimant established only a suspected or probable
    association between firefighting and large B-cell NH-lymphoma. However, using
    a weight of the evidence criterion, Dr. Guidotti found a relationship between
    firefighting and Claimant’s lymphoma.
    Relying on the report of its expert, Dr. Sandler, Employer further argues
    Dr. Guidotti attempted to associate the byproduct of burning materials into
    37
    halogenated alkene compounds, including TCE, a Group 1 carcinogen found in fire
    smoke and specifically associated with large B-cell NH-lymphoma. However,
    Employer asserts, there are no PennFIRS reports, or any other source, which would
    permit Dr. Guidotti to conclude Claimant had any firefighting exposure to TCE. As
    such, there is simply no evidence of Claimant’s direct exposure to TCE.
    Again relying on its expert’s report, Employer further argues Dr.
    Guidotti did not adequately describe his methodology and based his opinion as to
    causation on speculation and deductive reasoning because of the lack of scientific
    evidence. To that end, Dr. Guidotti focused only on studies that would affirm the
    conclusion that firefighting is related to some types of lymphoma. However, these
    studies focused exclusively on urban firefighters, as opposed to part-time, rural
    firefighters. None of these studies accounted for the lower exposures of volunteer
    firefighters.
    Employer further asserts expert testimony is required to prove direct
    exposure to Group 1 carcinogens because such exposure is largely a question of
    toxicology. In order to determine direct exposure to a particular substance, an expert
    must calculate the quantity, duration, and volume of the substance and its effect on
    each affected organ. Employer asserts Dr. Guidotti, Claimant’s sole expert, did not
    and could not make these calculations.
    Summarizing, Employer argues, in light of the lack of a factual basis in
    the record and the use of speculation and inference in the place of scientific
    methodology, Dr. Guidotti’s opinions and report did not constitute substantial,
    38
    competent evidence. Therefore, Employer maintains this Court must reverse the
    grant of Claimant’s claim petition.
    c. Employer’s Rebuttal Evidence
    Employer further alleges that even if Claimant presented enough
    evidence to warrant application of the presumption of compensability in Section
    301(f) of the Act, it produced rebuttal evidence sufficient to overcome the
    presumption. As a general rule, a presumption is but an evidentiary advantage and
    its only effect is to shift the evidentiary burden of going forward to the opponent.
    See In re: Annexation by Borough of Irwin, 
    67 A.2d 757
     (Pa. Super. 1949). When
    evidence is introduced that rebuts the presumption, it disappears. 
    Id.
    Here, Employer argues the WCJ should not have pitted the testimony
    of Claimant’s expert, Dr. Guidotti, against that of its expert, Dr. Sandler, at the
    rebuttal stage. Rather, the WCJ should have determined whether Dr. Sandler
    presented substantial competent evidence supporting a proposition contrary to the
    presumption.
    Employer asserts nothing in the text of Section 301(e) or 301(f) of the
    Act suggests that an employer must prove that a particular lifestyle choice, genetic
    marker or hazardous exposure caused a particular claimant’s cancer. Rather, the
    only burden imposed upon the employer is to show that the occupation did not cause
    the disease or injury. Here, Employer argues it provided sufficient evidence to rebut
    the presumption.
    39
    In particular, Employer cited an IARC Monograph on firefighting
    which determined that 90% of municipal fires are extinguished within 5-10 minutes.
    See Dr. Sandler’s Report (Sandler Rep.), 3/14/16, at 6; R.R. at 450a. The length of
    a fire in a municipal setting drastically limits the potential exposure.
    Employer further maintains that its expert, Dr. Sandler, conclusively
    showed that firefighting and large B-cell NH-lymphoma are not causally linked.
    Employer argues its burden stopped there. Nevertheless, Dr. Sandler offered other
    reasons for large B-cell NH-lymphoma. To that end, the strongest known etiologic
    factor for B-cell lymphomas is a previous infection with the Epstein-Barr virus, a
    part of the herpes virus family. See Sandler Rep. at 9; R.R. at 453a. The doctor
    observed that although nothing indicates Claimant suffered from Epstein-Barr, he
    does have a history of shingles, which has been linked to the development of cancer.
    
    Id.
    Summarizing, Employer asserts it provided the WCJ with substantial,
    competent evidence that exposure to Group 1 carcinogens did not cause Claimant’s
    large B-cell NH-lymphoma.         Therefore, Employer maintains it rebutted any
    presumption that Claimant’s cancer arose out of and in the course of his
    employment. As such, Employer contends the WCJ erred as a matter of law in
    determining that the presumption applied.
    40
    2. Analysis
    a. General Causation Requirement
    As discussed above, in Sladek the Supreme Court interpreted the
    general causation requirement in Section 108(r) of the Act as requiring a claimant to
    produce evidence that it is possible that the carcinogen in question caused the type
    of cancer from which he suffered. However, Section 108(r) does not require the
    claimant “to prove that the identified carcinogen actually caused [his] cancer.”
    Sladek, 195 A.3d at 208 (emphasis added).
    Essentially, the Court interpreted the intent of the general causation
    requirement was to weed out claims for compensation “for cancers with no known
    link to Group 1 carcinogens.” Id. The Court observed that the burden imposed by
    Section 108(r) “is not a heavy burden.” Id.
    Here, Dr. Guidotti opined within a reasonable degree of medical
    certainty that Claimant’s cancer, a specific form of NH-lymphoma, arose out of his
    occupation as a firefighter. F.F. No. 14i; Report of Dr. Tee L. Guidotti (Guidotti
    Rep.), 9/10/15, at 6; R.R. at 222a. The WCJ found that Dr. Guidotti credibly
    established that the IARC recognizes an association between NH-lymphoma and the
    occupation of firefighting. F.F. No. 32; Guidotti Rep. at 3; R.R. at 219a.
    In particular, Dr. Guidotti opined, based upon his experience and his
    review of all literature, that constituents of fire smoke, particularly TCE, are
    associated with elevated risk of large B-cell NH-lymphoma. F.F. No. 32; Guidotti
    Rep. at 5; R.R. at 221a. Focusing on TCE, Dr. Guidotti stated that although
    41
    firefighters are exposed to many carcinogenic chemicals that may play a role in large
    B-cell NH-lymphoma, TCE stands out as the leading candidate for causation because
    of its known association with large B-cell NH-lymphoma and its presence in fire
    smoke. F.F. No. 32; Guidotti Rep. at 5; R.R. at 221a.
    Dr. Guidotti further stated that Claimant has no other recognized risk
    factors for large B-cell NH-lymphoma. F.F. No. 32; Guidotti Rep. at 6; R.R. at 222a.
    Therefore, Dr. Guidotti opined, to a reasonable degree of medical certainty, that
    Claimant’s large B-cell NH-lymphoma arose from his occupation as a firefighter.
    F.F. No. 32; Guidotti Rep. at 6; R.R. at 222a.
    In accord with the Supreme Court’s decision in Sladek, we must
    conclude that Dr. Guidotti’s medical opinion as to the causation of Claimant’s large
    B-cell NH-lymphoma satisfies the general causation requirement in Section 108(r)
    of the Act.     Dr. Guidotti opined that Claimant’s lymphoma arose from his
    occupational exposure to Group 1 carcinogens in “fire smoke and atmospheres at the
    fire scene,” particularly TCE. Guidotti Rep. at 5; R.R. at 221a (emphasis added).
    Dr. Guidotti’s opinion is sufficient to establish a causal link between Claimant’s type
    of cancer and a Group 1 carcinogen. Sladek.
    b. Competency of Claimant’s Medical Evidence
    Employer also challenges the competency of Claimant’s medical
    evidence. More specifically, Employer advances several reasons why Dr. Guidotti’s
    opinions as to a causal link between Claimant’s large B-cell NH-lymphoma and a
    Group 1 carcinogen is equivocal and unsupported by the record.
    42
    In a case where the causal connection between a claimant’s work and
    his injury is not obvious, the connection must be established by unequivocal medical
    testimony. Bemis v. Workers’ Comp. Appeal Bd. (Perkiomen Grille Corp.), 
    35 A.3d 69
     (Pa. Cmwlth. 2011). Whether an expert’s testimony is unequivocal is a question
    of law fully reviewable on appeal. 
    Id.
     In reaching that determination, we must
    review the testimony of a witness as a whole and not take words or phrases out of
    context. 
    Id.
     An expert’s testimony is unequivocal if, after providing a foundation,
    he states that he believes or thinks the facts exist. 
    Id.
     In short, the expert must state
    not that the injury or condition may have possibly come from the assigned cause,
    but rather that in his professional opinion, the injury or condition did come from the
    assigned cause. 
    Id.
    Nonetheless, the law does not require that every utterance from an
    expert on a medical subject be certain, positive, and without reservation or
    exception.   
    Id.
       An expert’s use of words such as “probably,” “likely,” and
    “somewhat” will not render an expert’s opinion equivocal as long as the expert does
    not recant his opinion as to causation. 
    Id. at 72
    .
    Here, Dr. Guidotti’s report contains a review of Claimant’s medical
    history and an assessment of his firefighting exposures. Guidotti Rep. at 1-2; R.R.
    at 217a-18a. A needle biopsy indicated large cell NH-lymphoma. 
    Id.
     Dr. Guidotti
    further noted that Claimant served as a firefighter for 39 years in an industrial
    community. 
    Id.
     Claimant responded to an average of 12 to 18 fires a year. 
    Id.
    These included car fires, house fires, and an industrial fire at a chemical plant where
    the firefighters were engaged in a cloud of thick black smoke. 
    Id.
    43
    Regarding general causation, Dr. Guidotti acknowledged that the
    specific relationship between firefighting and large B-cell NH-lymphoma is only
    now coming under study. Guidotti Rep. at 2; R.R. at 218a. Nonetheless, Dr.
    Guidotti noted that strong collateral evidence, notably several medical and scientific
    studies, including a meta-analysis performed by the IARC, establish that there is a
    causal relationship between firefighting and large B-cell NH-lymphoma. Guidotti
    Rep. at 3; R.R. at 219a. The doctor further noted, “for firefighters with 20 or more
    years of experience”, epidemiological studies show an elevated risk of lymphomas
    “approaching or exceeding a doubling.” Guidotti Rep. at 4; R.R. at 220a. Therefore,
    Dr. Guidotti opined it is reasonable to give the benefit of the doubt to the individual
    claimant on the basis of general causation alone. 
    Id.
    Regarding exposure to specific carcinogens, Dr. Guidotti stated:
    Collateral evidence that [large B-cell NH-lymphoma] is
    associated with exposures known to occur during
    firefighting is strong, however.        Fire smoke and
    atmospheres at the fire scene contain a variety of
    secondary combustion products, formed by the reaction of
    organic material produced by burning and chlorine from
    sources such as polyvinyl chloride furnishings and
    products in the home. These produce halogenated alkene
    compounds, including [TCE], an IARC Group 1
    carcinogen that is found in fire smoke and has been
    specifically associated with [large B-cell NH-lymphoma,]
    as well as other Non-Hodgkin[’s] lymphomas. The
    association has not been separately studied among
    firefighters as yet.
    Firefighters are exposed to many other carcinogenic
    chemicals that may play a role in [large B-cell NH-
    lymphoma], but [TCE], an IARC carcinogen, stands out as
    the leading candidate for causation because of its known
    association with the disease and its presence in fire smoke.
    44
    At present, therefore, the state of the art is that the weight
    of the evidence favors the conclusion that constituents of
    fire smoke, particularly [TCE], are associated with
    elevated risk of [large B-cell NH-lymphoma], specifically.
    Guidotti Rep. at 5; R.R. at 221a (footnotes omitted).
    As discussed above, Dr. Guidotti concluded, with a reasonable degree
    of medical certainty, that Claimant’s cancer, a specific form of non-Hodgkin’s
    lymphoma, arose out of his work as a firefighter and its associated exposures, “which
    strongly contributed to his risk of the cancer.” Guidotti Rep. at 6; R.R. at 222a
    (emphasis added). Summarizing, Dr. Guidotti stated:
    There is an elevation in risk for non-Hodgkin[’s]
    lymphomas, in general among firefighters, sufficient to
    conclude on the basis of scientific evidence that this
    disease class is associated with occupation as a firefighter.
    There is strong collateral evidence that [large B-cell NH-
    lymphoma] is elevated. This collateral evidence suggests
    that the cause within firefighting is exposure to
    halogenated alkenes and likely other carcinogens as well.
    [Claimant] has no other risk factors for this disease. The
    weight of the evidence therefore strongly supports the
    conclusion that [Claimant’s] lymphoma is causally
    associated with his work as a firefighter.
    
    Id.
     (emphasis added).
    As noted above, an expert’s testimony is unequivocal if, after providing
    a foundation, he states that he believes or thinks the facts exist. Bemis. In short, the
    expert must state not that the injury or condition may have possibly come from the
    assigned cause, but rather that in his professional opinion, the injury or condition did
    come from the assigned cause. 
    Id.
    45
    Further, competency when applied to medical evidence, involves a
    determination that the expert’s opinion is sufficiently definite and unequivocal to
    render it admissible. Cerro Metal Prods. Co. v. Workers’ Comp. Appeal Bd.
    (Plewa), 
    855 A.2d 932
     (Pa. Cmwlth. 2004).           “Even if the witness admits to
    uncertainty, reservation, doubt or lack of information with respect to scientific or
    medical details, as long as the witness does not recant the opinion first expressed,
    the evidence in [sic] unequivocal.” 
    Id. at 937
    .
    Here, Dr. Guidotti, relying on medical and scientific evidence,
    concluded, within a reasonable degree of medical certainty, that Claimant’s cancer
    arose out of his work as a firefighter and the exposures associated with it. Dr.
    Guidotti determined that Claimant had no other risk factors for his type of cancer.
    The WCJ found this testimony particularly credible. F.F. No. 32. Although Dr.
    Guidotti acknowledged the lack of specific studies regarding the causal connection
    between TCE and large B-cell NH-lymphoma in firefighters, the doctor never
    recanted his opinion. Therefore, viewing Dr. Guidotti’s report in its entirety, we
    determine it to be unequivocal as to the causal relationship between TCE and other
    carcinogens found in fire smoke and large B-cell NH-lymphoma. Cerro Metal
    Prods.
    Nonetheless, we recognize that Employer takes issue with the scientific
    evidence Dr. Guidotti cites in support of his opinion. Primarily relying on the report
    of its expert, Dr. Sandler, Employer points out various alleged flaws in the studies
    cited by Dr. Guidotti. For example, Dr. Sandler noted that Dr. Guidotti relied on
    studies involving full-time firefighters rather than volunteer firefighters. Therefore,
    46
    Dr. Sandler reasoned that these studies failed to take into account the lower
    exposures a volunteer firefighter would have.
    The WCJ, however, “particularly rejected as not credible” Dr. Sandler’s
    opinion that there is no reliable, scientifically derived evidence that Claimant’s time
    spent as a volunteer firefighter caused him to sustain any exposure that had an impact
    on the development of his cancer. F.F. No. 32. As the sole fact-finder in workers’
    compensation cases, the WCJ has exclusive province over issues of credibility and
    evidentiary weight. A & J Builders, Inc. v. Workers’ Comp. Appeal Bd. (Verdi), 
    78 A.3d 1233
     (Pa. Cmwlth. 2013). The WCJ may accept or reject the testimony of any
    witness, including an expert witness, in whole or in part. 
    Id.
     In addition, we are
    bound by the WCJ’s credibility determinations. 
    Id.
    Further, it is irrelevant whether the record contains evidence to support
    findings other than those made by the WCJ; the critical inquiry is whether there is
    evidence to support the findings actually made. 
    Id.
     Moreover, we must view the
    evidence in a light most favorable to the prevailing party and give it the benefit of
    all inferences reasonably deduced from the evidence. 
    Id.
    The WCJ found Dr. Guidotti’s opinion as to causation competent and
    particularly credible. F.F. No. 32. The WCJ also afforded Dr. Guidotti’s report the
    “greater weight for persuasion,” when compared to that of Employer’s expert, Dr.
    Sandler. 
    Id.
     Having determined Dr. Guidotti’s opinion that Claimant’s cancer arose
    out of his work as a firefighter and the exposures associated with it, including his
    exposure to Group 1 carcinogens in fire smoke, particularly TCE, to be unequivocal,
    47
    we reject Employer’s contention that Dr. Guidotti’s opinion was equivocal and not
    competent to satisfy the general causation requirement in Section 108(r) of the Act.
    As discussed above, Dr. Guidotti’s medical opinion sufficiently established, at a very
    minimum, that it is possible that TCE and other carcinogens in fire smoke caused
    Claimant’s cancer. Sladek. Thus, we find Dr. Guidotti’s report to be competent
    medical evidence of causation and sufficient to meet Section 108’s standard for
    general causation as delineated by the Supreme Court in Sladek.
    c. Employer’s Rebuttal Evidence
    We next address the argument that, even if Claimant presented
    sufficient evidence to warrant application of the presumption of compensability in
    Section 301(f) of the Act, Employer produced rebuttal evidence sufficient to
    overcome the presumption. As discussed above, our Supreme Court recognized that
    the language in Section 301(f) requires that an employer’s rebuttal evidence show
    that the firefighter’s cancer was not caused by firefighting exposures. Sladek, 195
    A.3d at 209-10. Because the phrase “a firefighter’s cancer” refers to the claimant’s
    cancer, an employer’s rebuttal evidence must establish: (1) the specific causative
    agent of the claimant’s cancer; and (2) that exposure to that causative agent did not
    occur as a result of his work as a firefighter. Id. The Court noted that where, as
    here, a claimant meets the general causation burden in Section 108(r), the employer
    may not rebut the evidentiary presumption in Section 301(f) merely by revisiting the
    general causation requirement and challenging its accuracy. Id. At the rebuttal
    stage, the issue relates not to the types of cancer relative to potential carcinogens,
    but rather requires proof that the claimant’s cancer was not caused by his occupation
    as a firefighter. Id.
    48
    As noted above, the WCJ “particularly rejected as not credible” Dr.
    Sandler’s testimony that there is no reliable, scientifically derived evidence that
    Claimant’s time spent as a volunteer firefighter caused him to sustain any exposure
    that had an impact on the development of his cancer. F.F. No. 32. Therefore, it
    cannot rebut the evidentiary presumption in Section 301(f) that Claimant’s cancer is
    causally related to his work as a volunteer firefighter. Sladek.
    C. Subrogation Lien for Benefits Provided by Highmark
    1. WCJ’s Decision
    Employer also contends the Board erred in sustaining the WCJ’s award
    of a subrogation lien asserted by Trover, formerly Healthcare Recoveries, Inc., on
    behalf of Highmark.           Employer maintains that Attorney Richard A. Estacio
    (Subrogee Counsel), a member of a law firm (Gibson Kolb) representing Trover,
    attempted to assert a subrogation lien on behalf of Highmark for $78,104 for non-
    workers’ compensation medical payments for Claimant’s treatment. Employer
    argues that the documents Subrogee Counsel presented did not establish the
    necessary elements to prove the existence of an awardable lien and failed to establish
    the true party in interest.
    In his decision, the WCJ found that Claimant submitted Exhibit C-08.
    F.F. No. 11. In this letter to the WCJ dated May 10, 2016, Subrogee Counsel stated:
    Please be advised that we represent [Trover/Highmark]
    relative to the latter’s subrogation lien for medical benefits
    in connection with [Claimant’s case]. We attempted to
    Request an Entry of Appearance via [the Workers’
    Compensation Automation and Integration System
    (WCAIS)] but it did not go through for some reason.
    49
    Accordingly, please allow this letter to serve as my entry
    of appearance on behalf of Highmark.
    To date, Highmark has paid benefits totaling $78,104.00
    on behalf of [Claimant]. We were only recently informed
    that this matter was pending before you, and that the
    record was recently closed as well. Accordingly, I would
    respectfully request that the record be reopened for the
    submission of our lien documentation pursuant to §319 of
    the Act.
    R.R. at 428a.
    In response to Subrogee Counsel’s correspondence, the WCJ issued an
    interlocutory order overruling Claimant’s objection to the opening of the record and
    scheduling a hearing for June 13, 2016. See Ex. J-1, Interlocutory Order, 5/25/16;
    R.R. at 546a. The order directed Subrogee Counsel to provide all parties’ attorneys
    with all the relevant documentation pertaining to the alleged $78,104 in benefits paid
    to Claimant. Id.
    The WCJ also found that Claimant testified his medical bills were being
    paid by his health insurance coverage, Blue Cross and Blue Shield (BCBS), provided
    by his employer, the U.S. Post Office. F.F. No. 13gg. With respect to the timeliness
    of Highmark’s subrogation lien the WCJ found:
    Independence [BC] (Highmark) was unable to earlier
    assert its subrogation interest through no fault of its own,
    due to an administrative inability to enter appearance as an
    interested party via [WCAIS]. …
    F.F. No. 24. With respect to the amount of the balance of the lien, the WCJ found:
    50
    A review of Exhibit (D-INBL-01) reveals Trover
    Solutions[’] Consolidated Statement of Benefits
    (Highmark) naming [Claimant] with service period March
    3, 2015 - October 20, 2015 total billed charges
    $121,960.20; Benefits Provided $78,104.00; Balance Due
    $78,104.00.
    F.F. No. 25. The WCJ also reviewed a 2014 BCBS Benefit Plan, admitted as Exhibit
    D-INBL-02, which specified that the plan did not cover medical services separately
    covered by workers’ compensation. F.F. No. 26.
    The WCJ also reviewed Exhibit D-INBL-03, a 2013 deposition from
    Jennifer L. Armstrong (WC Supervisor), who worked as the supervisor of the
    Workers’ Compensation Recovery Unit of Trover’s predecessor, Healthcare
    Recoveries, Inc. (HRI). F.F. No. 27a. WC Supervisor described the overall nature
    of HRI’s business as providing subrogation and workers’ compensation recovery
    services to healthcare insurers across the country. Id. WC Supervisor identified an
    Agent Authorization document as an agency agreement between HRI and
    Independence BC upon which HRI relied in subrogation matters on behalf of
    Independence BC. F.F. No. 27d. WC Supervisor also explained the consolidated
    statements of benefits (CSBs) used to detail the benefits paid by Independence BC
    and Highmark for cancer treatment in Act 46 cases involving the City of
    Philadelphia. F.F. No. 27e. In particular, WC Supervisor described how the lien
    amounts are obtained and processed. Id.
    The WCJ found WC Supervisor’s testimony competent, significantly
    persuasive and particularly credible as to the CSB and “the process of identification
    and diagnosis codes as to medical services provided ….” F.F. No. 29. The WCJ
    51
    further found in Finding of Fact No. 29 that WC Supervisor’s testimony is supported
    by the detailed lien in the present case for the relevant time period of services
    Highmark provided to Claimant. See Trover CSB; Ex. D-INLB-01 (469a-75a).
    Ultimately, the WCJ found that “Independence [BC] preserved its lien
    amounting to $78,104 and is subrogated accordingly pursuant to Section 319 of the
    Act.” F.F. No. 31. Accordingly, the WCJ ordered Employer to pay Independence
    BC (Highmark) $78,104 for benefits provided. WCJ Order, 10/14/16. On appeal,
    the Board affirmed the subrogation lien, but modified the WCJ’s order to reflect a
    subrogation lien on behalf of “Trover Solutions/Highmark rather than Independence
    [BC].” Bd. Order, 3/6/18.
    2. Argument
    Employer raises numerous issues regarding the subrogation lien. First,
    Employer contends Trover lacks standing because it failed to establish a contractual
    agency relationship with Highmark. Although Highmark may have standing as an
    insurer, Employer argues Trover is not an insurer and thus lacks standing absent
    proof of an agency relationship with Highmark. Second, Employer asserts Trover’s
    CSB, admitted as Exhibit D-INBL-01, and the BCBS Service Plan, admitted as
    Exhibit D-INBL-02, are hearsay documents and are irrelevant to the issue of whether
    Highmark properly established its right to subrogation. Third, Employer contends
    WC Supervisor’s deposition, admitted as Exhibit D-INBL-03, is insufficient to
    establish a contractual relationship between Trover and Highmark.         Employer
    further asserts WC Supervisor’s deposition was taken for cases involving
    subrogation liens in firefighter cases involving the City of Philadelphia and is
    52
    irrelevant here. Fourth, Employer contends Trover’s CSB and BCBS Benefits Plans
    were not properly authenticated and cannot be considered self-authenticating absent
    certification by the custodian, or another qualified person, to show they are of a
    regularly conducted activity. Fifth, Employer contends Trover’s CSB is irrelevant
    because it is merely a listing of procedures with no reference to Highmark.
    Therefore, it cannot establish a relationship between Trover and Highmark.
    We recognize that the City of Philadelphia, as an employer, raised
    similar issues in City of Philadelphia v. Workers’ Compensation Appeal Board
    (Knudson), 
    165 A.3d 1039
     (Pa. Cmwlth. 2017) (en banc).              In Knudson, we
    determined that the employer waived these issues by failing to raise them before the
    WCJ. Here, however, Employer raised these issues before the WCJ. See Ex. D-03
    (Preservation of Objections); R.R. at 437a-42a.
    3. Analysis
    a. Board Decision
    To begin, we note that Employer also raised these issues before the
    Board. In rejecting Employer’s contentions, the Board noted that Trover/Highmark,
    through Subrogee Counsel’s letter, indicated that it was asserting a lien in the amount
    of $78,104, the amount the WCJ found to be recoverable. See Bd. Op. at 12-13.
    Trover/Highmark also submitted a CSB indicating that Highmark paid a total of
    $78,104 on Claimant’s behalf related to his cancer diagnosis during the period of
    March 10 through October 20, 2015. Id. at 13. The Board determined that this
    evidence constituted substantial, competent evidence to support the WCJ’s award of
    a subrogation lien in the amount of $78,104. Id.
    53
    b. Section 319 of the Act
    Trover/Highmark sought subrogation under the second paragraph of
    Section 319 of the Act, 77 P.S. §671, which pertinently provides:
    Where an employe has received payments for disability or
    for medical expense resulting from an injury in the course
    of his employment paid by the employer or an insurance
    company on the basis that the injury and disability were
    not compensable under this act in the event of an
    agreement or award for that injury the employer or
    insurance company who made the payments shall be
    subrogated out of the agreement or award to the amount so
    paid, if the right to subrogation is agreed to by the parties
    or is established at the time of the hearing before the
    [WCJ] or [Board].
    The second paragraph of §319 contemplates subrogation established
    either by contract or by litigation. Indep. Blue Cross v. Workers’ Comp. Appeal Bd.
    (Frankford Hosp.), 
    820 A.2d 868
     (Pa. Cmwlth. 2003). Subrogation under this
    paragraph is neither automatic nor absolute. 
    Id.
     Moreover, it is not self-executing
    and must be asserted with reasonable diligence. 
    Id.
    c. Discussion
    First, we reject Employer’s contention that Trover lacks standing as a
    subrogation agent because it failed to establish a contractual agency relationship
    with Highmark. As indicted by his letter asserting Highmark’s subrogation interest
    in this case, Subrogee Counsel explicitly entered his appearance on behalf of
    Highmark. See Ex. C-8; R.R. at 428a. In his interlocutory order, the WCJ noted
    that he received Subrogee Counsel’s letter in May 2016, prior to the scheduled close
    of the record on July 1, 2016. R.R. at 546a. Subrogee Counsel’s letter stated that
    Highmark had a subrogation lien for $78,104 in paid benefits. 
    Id.
     This is sufficient
    54
    to establish that Highmark timely preserved its subrogation lien under Section 319
    of the Act by asserting it before the close of the record. Evans v. Workers’ Comp.
    Appeal Bd. (Highway Equip. and Supply Co.), 
    94 A.3d 1091
     (Pa. Cmwlth. 2014).
    Further, WC Supervisor testified in her deposition that HRI, Trover’s
    predecessor, provides subrogation and workers’ compensation recovery services to
    healthcare insurers across the nation. F.F. No. 27a; Dep. of Jennifer L. Armstrong
    (Armstrong Dep.) at 5; R.R. at 486a. WC Supervisor acknowledged that her
    testimony as to HRI/Trover’s representation of Independence BC and Highmark will
    be relative to the general, overall process of how these subrogation matters are
    handled. F.F. No. 27b; Armstrong Dep. at 6-7; R.R. at 487a-88a. WC Supervisor
    further testified that HRI/Trover executes an agency authorization document with
    the healthcare insurer it represents and that it relies upon this document in pursuing
    subrogation matters. F.F. No. 27d; Armstrong Dep. at 13-14; R.R. at 494a-95a.
    Thus, WC Supervisor’s accepted testimony established a course of
    dealing or industry practice between HRI/Trover and insurers, established the
    insurer/clients as the source of documents upon which it relies when it undertakes
    extensive recovery services, and establishes how the documents are created and
    maintained in the regular course of business.
    Given the findings by the WCJ and the evidence supporting them, we
    reject Employer’s contention that Trover failed to produce sufficient evidence of an
    agency relationship with Highmark for purposes of asserting a subrogation lien on
    Highmark’s behalf. We must examine the record in its entirety to determine if it
    55
    contains sufficient evidence to support the WCJ’s findings. Knudson; A & J
    Builders.
    Although WC Supervisor testified regarding HRI’s role in subrogation
    matters in Act 46 cases involving Philadelphia firefighters, the WCJ could
    reasonably infer from Subrogee Counsel’s letter and WC Supervisor’s testimony
    about HRI/Trover’s course of conduct and reliance, that Trover represents Highmark
    as an authorized agent, or at least an apparent agent, in this subrogation matter. This
    is especially true in the absence of any evidence that HRI/Trover’s business
    practices, course of conduct or reliance changed after WC Supervisor’s testimony.
    “The creation of an agency relationship requires no special formalities.”
    B & L Ashphalt Indus., Inc. v. Fuso, 
    753 A.2d 264
    , 269 (Pa. Super. 2000). To
    establish an agency relationship, direct proof of specific authority is not needed
    where it can be inferred from the facts that the parties intended to create an agency
    relationship. 
    Id.
    As a final point on the standing matter, there is no dispute that Claimant
    incurred medical bills. Also, there is no assertion that the bills remain unpaid.
    Further, no entity other than Highmark claims to have paid the bills.           These
    circumstances tend to support the Board’s ultimate determination that Highmark,
    through its agent Trover, is a proper party to assert subrogation.
    Second, the WCJ also accepted WC Supervisor’s testimony regarding
    the process of determining the lien amounts in HRI/Trover’s CSBs as competent,
    56
    significantly persuasive and particularly credible. F.F. No. 29. WC Supervisor
    testified as to how the lien amounts in the CSBs for benefits paid by healthcare
    insurers related to the firefighters’ cancer claims are determined. Armstrong Dep.
    at 15-20; R.R. at 496a-501a.   WC Supervisor further stated that the CSBs and the
    cumulative lists related to them are records kept in the ordinary course of business.
    Armstrong Dep. at 20; R.R. at 501a.
    The WCJ also found that WC Supervisor’s testimony regarding the
    CSBs was supported by the lien detail in Trover’s CSB in this case, which was
    admitted into evidence as Exhibit D-INBL-01. F.F. No. 29. Trover’s CSB includes
    an itemized list of medical benefits provided to Claimant for treatment of his large
    B-cell NH-lymphoma. See R.R. at 469a-75a.
    Nevertheless, Employer maintains that Trover’s CSB is a hearsay
    document and that WC Supervisor’s testimony is insufficient to authenticate it
    because she does not work for Highmark. We disagree. Commonwealth agencies
    are not bound by the technical rules of evidence in agency proceedings, and all
    relevant evidence of reasonably probative value may be received. 2 Pa. C.S. §505;
    Gibson. This statutory maxim has been properly interpreted to permit a relaxation
    of the strict rules of evidence in agency hearings and proceedings, including those
    held by a WCJ. Gibson. Generally, issues concerning the admission and exclusion
    of evidence fall within the sound discretion of the administrative tribunal and will
    not be reversed on appeal absent a finding of an abuse of discretion. Id.
    57
    Nonetheless, for a hearsay document to be admissible into evidence
    under the business records exception in Pa.R.E. 803(6), it must be supported by
    evidence sufficient to support a finding that the item is what the proponent claims it
    is. Keystone Dedicated Logistics, Inc. v. JGB Enters., Inc., 
    77 A.3d 1
     (Pa. Super.
    2013). Thus, the authentication requirement is satisfied by evidence sufficient to
    support a finding that the document in question is what its proponent claims.
    Keystone (citing Zuk v. Zuk, 
    55 A.3d 102
     (Pa. Super. 2012)).
    As noted above, WC Supervisor testified that the CSBs and the
    cumulative lists related to them are records kept in the ordinary course of business.
    Armstrong Dep. at 20; R.R. at 501a. Under the business records exception, it is not
    necessary to produce either the individual who made the entries or the custodian of
    the record at the time the entries were made or to establish that the witness qualifying
    the business record had personal knowledge of the facts reported in the business
    record. Virgo v. Workers’ Comp. Appeal Bd. (Cty. of Lehigh-Cedarbrook), 
    890 A.2d 13
     (Pa. Cmwlth. 2005). To that end, the person who received the document
    can also authenticate what he or she received and acted upon. Keystone; Zion Bullitt
    Ave Ltd. v. Westmoreland Cty. Tax Claim Bureau (Pa. Cmwlth., No. 1396 C.D.
    2014, filed June 5, 2015) (unreported), 
    2015 WL 5446796
    .
    As to Employer’s claim that WC Supervisor’s testimony is inadequate
    and irrelevant, we disagree. As observed above, in the absence of evidence that
    HRI/Trover’s business practices, course of conduct and reliance changed after WC
    Supervisor’s testimony, the WCJ could infer that the described activity continued.
    58
    Additionally, the CSB provides on its face that it pertains to cancer
    treatment rendered to the named Claimant during the period of his disability. This
    information is corroborated by Subrogee Counsel’s professional representations in
    his letter to the WCJ. We further note the WC Supervisor’s testimony of creation of
    and reliance on documents in HRI/Trover’s recovery services business, and the
    absence of evidence that the business practices changed. Given all the foregoing,
    we discern no abuse of discretion by the WCJ in determining that the CSB was what
    its proponent claimed, Pa.R.E. 901(a)(authentication generally), and that there was
    nothing about the document’s circumstances which created a suspicion about a lack
    of trustworthiness. Pa.R.E. 803(6)(E)(exception to rule against hearsay; records of
    a regularly conducted activity).
    The object of authentication under the business records exception is to
    establish a presumption of trustworthiness to offset the hearsay character of the
    evidence. Virgo. We note that Employer did not offer any evidence to challenge
    authentication or trustworthiness of the CSB.
    In sum, viewing the record in its entirety, and in a manner favorable to
    the party prevailing before the compensation authorities, we hold that the WCJ’s
    award of a subrogation lien in favor of Highmark for $78,104 is supported by
    competent, substantial evidence. Evans.
    59
    IV. Conclusion
    For the reasons stated above, we affirm the order of the Board.
    ROBERT SIMPSON, Judge
    Judge Fizzano Cannon did not participate in the decision in this case.
    60
    IN THE COMMONWEALTH COURT OF PENNSYLVANIA
    Bristol Borough,                       :
    Petitioner     :
    :   No. 464 C.D. 2018
    v.                         :
    :
    Workers' Compensation Appeal           :
    Board (Burnett),                       :
    Respondent      :
    ORDER
    AND NOW, this 22nd day of March, 2019, for the reasons stated in the
    foregoing opinion, the order of the Workers’ Compensation Appeal Board is
    AFFIRMED.
    ROBERT SIMPSON, Judge
    

Document Info

Docket Number: 464 C.D. 2018

Citation Numbers: 206 A.3d 585

Judges: Jubelirer, Simpson, Brobson, McCullough, Covey, Wojcik, Ceisler

Filed Date: 3/22/2019

Precedential Status: Precedential

Modified Date: 10/19/2024

Authorities (13)

Evans v. Workers' Compensation Appeal Board , 2014 Pa. Commw. LEXIS 342 ( 2014 )

A & J Builders, Inc. v. Workers' Compensation Appeal Board , 2013 Pa. Commw. LEXIS 419 ( 2013 )

Allingham v. Workmen's Compensation Appeal Board , 1995 Pa. Commw. LEXIS 226 ( 1995 )

Irwin Borough Annexation Case (No. 1) , 165 Pa. Super. 119 ( 1949 )

Zuk v. Zuk , 2012 Pa. Super. 184 ( 2012 )

Independence Blue Cross v. Workers' Compensation Appeal ... , 2003 Pa. Commw. LEXIS 193 ( 2003 )

Keystone Dedicated Logistics, Inc. v. JGB Enterprises, Inc. , 2013 Pa. Super. 225 ( 2013 )

Blum Ex Rel. Blum v. Merrell Dow Pharmaceuticals, Inc. , 1997 Pa. Super. LEXIS 3861 ( 1997 )

B & L Asphalt Industries, Inc. v. Fusco , 2000 Pa. Super. 148 ( 2000 )

Virgo v. Workers' Compensation Appeal Board , 2005 Pa. Commw. LEXIS 756 ( 2005 )

Bemis v. Workers' Compensation Appeal Board , 2011 Pa. Commw. LEXIS 615 ( 2011 )

Trach v. Fellin , 2003 Pa. Super. 53 ( 2003 )

Cerro Metal Products Co. v. Workers' Compensation Appeal ... , 2004 Pa. Commw. LEXIS 581 ( 2004 )

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