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 2020

CALIFORNIA
COUNTY
2020 FROI 2020 Employment (EDD)* Percent FROIs Percent Employment (EDD) Rate of Injury to Employment
per 100 employees
Totals 645,409 1,7361,100 100% 100% 3.7
LOS ANGELES 163,875 4,548,300 25.4% 26.2% 3.6
ORANGE 51,976 1,443,300 8.1% 8.3% 3.6
SAN DIEGO 48,854 1,432,600 7.6% 8.3% 3.4
SAN BERNARDINO 43,764 902,700 6.8% 5.2% 4.8
RIVERSIDE 36,944 1,029,800 5.7% 5.9% 3.6
ALAMEDA 27,508 752,500 4.3% 4.3% 3.7
SANTA CLARA 26,020 1,366,200 4.0% 7.9% 1.9
SACRAMENTO 23,677 655,600 3.7% 3.8% 3.6
FRESNO 19,368 394,700 3.0% 2.3% 4.9
SAN FRANCISCO 15,287 302,600 2.4% 1.7% 5.1

*California Employment and Development Department (EDD) Labor Market Information (LMI) Local Area Unemployment Statistics Annual Average, updated April 16, 2021.

Annual Reports by Location

2020 Reports by Location

Report
Year
Report
Group
Table
Number
Table
Name
2020 Annual Aggregate Region and County Reports 7 Workers' compensation claims by region
2020 Annual Aggregate Region and County Reports 7a Workers' compensation claims by region and county

July 2021