Workers Compensation Insurance Rating Bureau (WCIRB)


The WCIRB is an actuarially-based information and research based organization for the State of California. It is an unincorporated, private, nonprofit association made up of all companies licensed to transact workers’ compensation insurance in California. Its purpose is to accurately measure the cost of providing workers’ compensation benefits through the collection of premium and loss data.



NCCI’s goal is to gather data, analyze industry trends and provide objective insurance rate and loss cost recommendations in an effort to foster a positive workers’ compensation system.

For information on Experience Rating Modification Factor, Experience Rating Overview, Intrastate vs. Interstate Experience Rating, Who Qualifies for Experience Rating, Explanation of Classifications, State Specific Insight, or Ownership please visit: ncci.com/pages.learningcenter.aspx

For information of frequently access forms, tools, and services please visit: ncci.com/pages/agents.aspx