Workers' compensation information system (WCIS)

Workers’ Compensation Claims by Region and County

First Reports of Injury (FROIs) submitted by Trading Partners to the Workers’ Compensation Information System (WCIS) captures location information about California’s workers’ compensation claims. Three data elements on location are the postal code of the accident/injury site; the employer’s complete address; and, the employee’s address.

The tables, charts and reports below are taken from the postal codes of each of three data elements. The numbers reflect the WCIS database information as of the run date of the report.

Percent of FROIs Reported by County of Accident Location in 2022

CALIFORNIA
COUNTY
2022 FROI 2022 Employment (EDD)* Percent FROIs Percent Employment (EDD) Rate of Injury to Employment per 100 employees
Totals 645,409 18,443,400 100.0% 100.0% 3.5
LOS ANGELES 163,875 4,728,500 25.40% 25.6% 3.5
ORANGE 51,976 1,543,500 8.10% 8.4% 3.4
SAN DIEGO 48,854 1,539,600 7.60% 8.3% 3.2
SAN BERNARDINO 43,764 956,200 6.80% 5.2% 4.6
RIVERSIDE 36,944 1,091,600 5.70% 5.9% 3.4
ALAMEDA 27,508 797,100 4.30% 4.3% 3.5
SANTA CLARA 26,020 1,452,000 4% 7.9% 1.8
SACRAMENTO 23,677 702,600 3.70% 3.8% 3.4
FRESNO 19,368 430,700 3% 2.3% 4.5
SAN JOAQUIN 15,287 331,100 2.40% 1.8% 4.6

*California Employment and Development Department (EDD) Labor Market Information (LMI) Local Area Unemployment Statistics Annual Average, updated June 16, 2023.

Annual Reports by Location

2022 Reports by Location

Report Year Report Group Table Number Table Name
2022 Annual Aggregate Region and County Reports 7 Workers' compensation claims by region
2022 Annual Aggregate Region and County Reports 7a Workers' compensation claims by region and county

October 2023