Workers’ Compensation Insurance Rating Bureau of California (WCIRB)

WCIRB California is a private, nonprofit association serving California’s workers’ compensation system. It provides actuarially based information and research, advisory pure premium rates, and educational services. To measure the cost of workers’ compensation benefits, it collects premium and loss data, examines policy documents, inspects insured businesses, and conducts test audits of insurer payroll audits and claims classifications. It also serves as California’s designated statistical agent under state authority.