RONALD PROCK vs. COUNTY OF BUTTE, Permissibly Self-Insured, JOINT POWERS AUTHORITY
This case involves a deputy sheriff, Ronald Prock, who suffered disabling heart symptoms in 2011, years after his retirement in 2001. The Workers' Compensation Appeals Board (WCAB) affirmed the prior findings, establishing the date of injury as December 31, 2002, to December 31, 2003, for cumulative trauma exposure. This determination assigns liability to the County of Butte JPA, as Prock was not employed by them or any other entity on the date his disability manifested and was known to be work-related (July 3, 2011). The WCAB clarifies that Labor Code section 5412's date of injury, which occurred after the last date of exposure, controls liability in this situation.