Estimates of the cost impact of SB 863 has been refined based on the latest emerging data.Read the Research Brief
The 2020 USRP, ERP and Basic Underwriting Manual can be downloaded in our Filings and Plans section.View the Plans
The 2019 version of our interactive tool filters premium, exposure and loss information by NAICS sector, claim status and claim type.View the Report
The WCIRB proposed January 1, 2020 Pure Premium Rates to the California Insurance Commissioner.View the Filing
The Workers' Compensation Insurance Rating Bureau of California (WCIRB) is California’s trusted, objective provider of actuarially-based, research integral to a healthy workers’ compensation system.
We provide tools to help licensed agents and brokers serve their clients, and educational resources for employers to better understand California’s workers’ compensation system.