Below are links to the current and immediately several recent versions of the California Workers' Compensation Uniform Statistical Reporting Plan—1995 (USRP), California Workers' Compensation Experience Rating Plan—1995 (ERP) and Miscellaneous Regulations for the Recording and Reporting of Data—1995 (Miscellaneous Regulations). These publications are part of the Insurance Commissioner's regulations for workers' compensation insurance and may be helpful in answering questions concerning workers' compensation insurance in California. 

• September 1, 2023 Regulatory Filing Quick Reference Guide: USRP and ERP Changes
• September 1, 2022 Regulatory Filing Quick Reference Guide: USRP and ERP Changes
• September 1, 2021 Regulatory Filing Quick Reference Guide: USRP, ERP and Miscellaneous Regulations Changes
• January 1, 2021 Regulatory Filing Quick Refence Guide: USRP and ERP Changes
• July 1, 2020 Regulatory Filing Quick Reference Guide: USRP and ERP Changes

California Workers' Compensation Uniform Statistical Reporting Plan—1995 (USRP)

September 1, 2023 Edition
Advisory Pure Premium Rates (XLS)

September 1, 2022 Edition
Advisory Pure Premium Rates (XLS)

September 1, 2021 Edition
Advisory Pure Premium Rates (XLS)

January 1, 2021 Edition
Advisory Pure Premium Rates (XLS)

July 1, 2020 Edition

California Workers' Compensation Experience Rating Plan—1995 (ERP)

September 1, 2023 Edition
Expected Loss Rates and D-Ratios (XLS)
Primary Threshold (XLS)
Approved experience rating eligibility threshold is $10,200.

September 1, 2022 Edition
Expected Loss Rates and D-Ratios (XLS)
Primary Threshold (XLS)
Approved experience rating eligibility threshold is $9,200.

September 1, 2021 Edition
Expected Loss Rates and D-Ratios (XLS)
Primary Thresholds (XLS)
Approved experience rating eligibility threshold is $9,500.

January 1, 2021 Edition
Expected Loss Rates and D-Ratios (XLS)
Primary Thresholds (XLS)
Approved experience rating eligibility threshold is $9,900.

July 1, 2020 Edition 

Miscellaneous Regulations for the Recording and Reporting of Data—1995

September 1, 2023 Edition
September 1, 2022 Edition
September 1, 2021 Edition
January 1, 2021 Edition

WCIRB Advisory Plans and References

Below are links to advisory publications produced by the WCIRB. These publications are not approved by the Insurance Commissioner. They are provided as a service to WCIRB members.

Plans
California Basic Underwriting Manual – Effective September 1, 2023
California Insolvent Insurer Rating Adjustment Plan – Effective January 1, 2014
Advisory California Rules for the Recording and Reporting of USL&H Workers' Compensation Act Coverage – Published October 23, 2014

California Small Deductible Plan
California Large Risk Deductible Plan
California Retrospective Rating Plan

References
Excerpts from the California Code of Regulations—Title 10
WCIRB Data Reporting Handbook – Policy Reporting
WCIRB Data Reporting Handbook – Unit Statistical Reporting