In RE McCALL-PRESSE, 247 P.3d 505

McCall-Presse, WWBC employee, claimed injury from inhaling a chemical cloud while driving for work on I-80 on April 14, 2008.
Division denied workers' compensation benefits; OAH held a contested case hearing and denied benefits.
Appellant sought emergency care two days after the incident; ER noted possible gas exposure; multiple physicians evaluated her later.
OAH found an injury but could not establish a causal link to employment; credibility concerns and lack of corroborating evidence were noted.
District court affirmed; Wyoming Supreme Court affirmed the denial, concluding substantial evidence supported the OAH's decision.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Was OAH's denial supported by substantial evidence?	McCall-Presse argues evidence shows employment-related causation.	State contends lack of causal evidence and credibility issues justify denial.	Yes; substantial evidence supports the denial.

Dale v. S & S Builders, LLC, 188 P.3d 554 (Wy. 2008) (substantial evidence standard for agency decisions)
Newman v. State ex rel. Wyo. Workers' Safety & Comp. Div., 49 P.3d 163 (Wy. 2002) (review standard; substantial evidence applies to factual findings)
Judd v. State ex rel. Wyo. Workers' Safety & Comp. Div., 233 P.3d 956 (Wy. 2010) (preponderance standard clarified)
Anastos v. Gen. Chem. Soda Ash, 120 P.3d 658 (Wy. 2005) (definition of preponderance of the evidence)
Taylor v. State ex rel. Wyo. Workers' Safety & Comp. Div., 123 P.3d 143 (Wy. 2005) (hearing examiner credibility determinations)