Gregory Oyler vs. COUNTY OF SONOMA, NORTHERN CLAIMS MANAGEMENT
Applicant sought workers' compensation for kidney cancer, invoking a presumption under Labor Code section 3212.1 due to alleged exposure to benzene as a deputy sheriff. The agreed medical evaluator opined that the cancer's established latency period (11-30+ years) and the applicant's history of tobacco use and hypertension rebutted this presumption. The Board affirmed the WCJ's finding that the presumption was rebutted, as the expert's opinion on latency and pre-existing risk factors constituted substantial evidence. Therefore, the applicant's claim for kidney cancer was denied compensation.