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Unit Statistical Report

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 unit statistical report 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" Unit Statistical Report, which must be submitted to the WCIRB 2 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 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 3 reports is used for experience rating purposes.

Unit Statistical Reporting

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 2018 Jul 2019 Jul 2020 Jul 2021 Jul 2022 Jul 2023 ... Jul 2028
Feb 2018 Aug 2019 Aug 2020 Aug 2021 Aug 2022 Aug 2023 ... Aug  2028
Mar 2018 Sep 2019 Sep 2020 Sep 2021 Sep 2022 Sep 2023 ... Sep 2028
Apr 2018 Oct 2019 Oct 2020 Oct 2021 Oct 2022 Oct 2023 ... Oct 2028
May 2018 Nov 2019 Nov 2020 Nov 2021 Nov 2022 Nov 2023 ... Nov 2028
Jun 2018 Dec 2019 Dec 2020 Dec 2021 Dec 2022 Dec 2023 ... Dec 2028
July 2018 Jan 2020 Jan 2021 Jan 2022 Jan 2023 Jan 2024 ... Jan 2029
Aug 2018 Feb 2020 Feb 2021 Feb 2022 Feb 2023 Feb 2024 ... Feb 2029
Sep 2018 Mar 2020 Mar 2021 Mar 2022 Mar 2023 Mar 2024 ... Mar 2029
Oct 2018 Apr 2020 Apr 2021 Apr 2022 Apr 2023 Apr 2024 ... Apr 2029
Nov 2018 May 2020 May 2021 May 2022 May 2023 May 2024 ... May 2029
Dec 2018 Jun 2020 Jun  2021 Jun 2022 Jun 2023 Jun 2024 ... Jun 2029

We welcome your feedback on this guide. Please send comments and suggestions to [email protected].