In the Matter of the Worker's Compensation Claim of Harold F. Vandre, an Employee of Mcmurry Ready Mix Company: Harold F. Vandre, 346 P.3d 946

Background

In 2007 Harold F. Vandre sustained severe compensable workplace injuries (including traumatic right-leg amputation, rib fractures, collapsed right lung, and closed head injury) while working for McMurry Ready Mix.
Vandre had preexisting COPD (documented as moderate–severe in 2007) and had been prescribed oxygen and inhalers before the accident, though he rarely used them while working.
After the 2007 injury Vandre’s respiratory symptoms and dependence on oxygen/CPAP increased; he also developed sleep apnea and received narcotics and sedating medications for pain.
In 2012 the Division denied coverage for four medical bills for COPD-related treatments (oxygen, equipment, inhalers), finding COPD unrelated to the 2007 work injury.
The OAH upheld the denial, concluding Vandre did not prove his work injury materially aggravated COPD and that smoking/self‑behavior was the cause; the district court affirmed.
The Wyoming Supreme Court reversed, finding the OAH’s rejection of treating‑physician causation opinion was not supported by substantial evidence and remanding for benefits on the disputed bills.

Issues

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether Vandre proved his 2007 work injury materially aggravated his preexisting COPD so as to require Division payment for COPD treatments	Vandre (through testimony and Dr. Berry) argued the accident (lung injury, amputation, pain meds, sleep apnea, decreased activity, depression) materially exacerbated and accelerated his COPD requiring increased respiratory treatment	Division argued COPD was preexisting, treatment/prescriptions were unchanged before/after the accident, and Vandre’s heavy smoking and noncompliance (not using oxygen/CPAP) explained worsening; presented no medical rebuttal expert	Court held Vandre met his burden: OAH’s rejection of Dr. Berry’s causation opinion lacked substantial evidentiary support; work injuries materially aggravated COPD and OAH order was reversed
Whether OAH permissibly discounted treating physician’s opinion as inadequately explained/advocacy driven	Vandre argued Dr. Berry provided reasonable explanation linking injury consequences (sedating meds, sleep apnea, reduced activity, depression, oxygen desaturation) to worsening COPD	Division/OAH characterized Dr. Berry’s opinion as unexplained, speculative, influenced by advocacy, and weakened by physician’s non‑pulmonologist status and alleged unawareness of smoking extent	Court held the OAH unreasonably discounted Dr. Berry: his testimony did explain mechanisms and OAH’s criticisms were contrary to the record
Whether plaintiff was required to apportion relative causes between smoking and work injury	Vandre argued apportionment not required; need only prove material aggravation by work injury	Division implicitly argued smoking was sole or controlling cause such that work injury was not a material factor	Court reiterated precedent: employee need not quantify or apportion contributions; only show work injury was a significant factor
Whether OAH’s decision was supported by substantial evidence / arbitrary and capricious	Division relied on OAH factual findings (smoking, nonuse of oxygen, same prescriptions) as substantial evidence	Vandre argued record showed marked clinical decline after injury and credible causation opinion from treating physician	Court held OAH decision was not supported by substantial evidence and declined to reach separate arbitrary/capricious analysis because reversal was warranted on substantial‑evidence ground

Key Cases Cited

Bailey v. Wyo. ex rel. Dep’t of Workforce Servs., 342 P.3d 1210 (Wyo. 2015) (standard for proving work activities materially aggravated preexisting condition)
Judd v. State ex rel. Wyo. Workers’ Safety & Comp. Div., 233 P.3d 956 (Wyo. 2010) (work injury need not change underlying pathology to be compensable; symptom aggravation can suffice)
Slaymaker v. State ex rel. Wyo. Workers’ Safety & Comp. Div., 156 P.3d 977 (Wyo. 2007) (post‑accident functional deterioration supports compensable aggravation)
Montoya v. State ex rel. Wyo. Workers’ Safety & Comp. Div., 203 P.3d 1083 (Wyo. 2009) (no requirement to apportion causation between preexisting disease and work activity)
Leavitt v. State ex rel. Wyo. Workers’ Safety & Comp. Div., 307 P.3d 835 (Wyo. 2013) (deference to hearing examiner’s weight determinations, but reversal warranted where findings are contrary to overwhelming evidence)