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Learn Changes to the Multiple Enterprises Rule

Sign up for a free webinar to learn major changes that simplify this rule in the USRP.


Governor Rescinds Stay-at-Home Order

Certain COVID-19 payroll reporting rules have ended and others will follow.


New WCIRB Research Report Released

California Workers’ Compensation Aggregate Medical Payment Trends – Updated through Calendar Year 2020


President’s Message to the Workers’ Compensation Community

Watch Bill Mudge and his colleagues discuss how the WCIRB embraces human connectedness.

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WCIRB CompEssentials®

Earn CompEssentials certification through online courses.

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About The WCIRB

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.

Learn more about the WCIRB >

Information for New WCIRB Members >

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