Data, including losses and payroll by classification, resulting from every workers' compensation insurance policy written in California is reported to the WCIRB in a Unit Statistical Report (USR). These reports, submitted by your insurance company, are the source of the data used by the WCIRB to administer the Experience Rating System and to publish experience modifications.
USRs are reported at specific intervals defined in Part 4, Section I of the California Workers' Compensation Uniform Statistical Reporting Plan—1995 (Uniform Statistical Reporting Plan). When a worker is injured on the job and a workers' compensation claim file is opened, an estimate of the total claim value (present and future) is made by your insurer and is included on the next USR for your policy filed with the WCIRB.
The first time a claim is valued for unit statistical reporting is 18 months after the policy inception month. This 18-month value is reported on a "first level" USR, which must be submitted to the WCIRB two months after the valuation date, or 20 months after the policy inception month. Claims that are still open as of the first report are required to be valued and reported again 12 months later (30-month valuation, due to the WCIRB at 32 months after the policy inception month) on a "second report." This process continues either until all claims are closed or for a total of 10 reports. Typically, only data contained in the first three reports is used for experience rating purposes.
|Inception Date of Policy||18-Month USR Valuation||30-Month USR Valuation||42-Month USR Valuation||54-Month USR Valuation||66-Month USR Valuation||...||126-Month USR Valuation|
|Jan 2020||Jul 2021||Jul 2022||Jul 2023||Jul 2024||Jul 2025||...||Jul 2030|
|Feb 2020||Aug 2021||Aug 2022||Aug 2023||Aug 2024||Aug 2025||...||Aug 2030|
|Mar 2020||Sep 2021||Sep 2022||Sep 2023||Sep 2024||Sep 2025||...||Sep 2030|
|Apr 2020||Oct 2021||Oct 2022||Oct 2023||Oct 2024||Oct 2025||...||Oct 2030|
|May 2020||Nov 2021||Nov 2022||Nov 2023||Nov 2024||Nov 2025||...||Nov 2030|
|Jun 2020||Dec 2021||Dec 2022||Dec 2023||Dec 2024||Dec 2025||...||Dec 2030|
|July 2020||Jan 2022||Jan 2023||Jan 2024||Jan 2025||Jan 2026||...||Jan 2031|
|Aug 2020||Feb 2022||Feb 2023||Feb 2024||Feb 2025||Feb 2026||...||Feb 2031|
|Sep 2020||Mar 2022||Mar 2023||Mar 2024||Mar 2025||Mar 2026||...||Mar 2031|
|Oct 2020||Apr 2022||Apr 2023||Apr 2024||Apr 2025||Apr 2026||...||Apr 2031|
|Nov 2020||May 2022||May 2023||May 2024||May 2025||May 2026||...||May 2031|
|Dec 2020||Jun 2022||Jun 2023||Jun 2024||Jun 2025||Jun 2026||...||Jun 2031|
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