WCIRB Releases Latest Study of Regional Differences in Claim Characteristics

Southern California continues to have higher frequency and a higher concentration of more complex claims involving medical-legal services and litigation, the Workers' Compensation Insurance Rating Bureau said in its 11th annual study of regional differences in claim characteristics. The WCIRB said the pattern of significant regional differences in indemnity claim frequency, even after adjusting for wages and industry mix, has remained generally stable. While differences widened slightly in the latest analysis, the 2025 Geo Study shows the same fundamental pattern as prior years. Claim fr...