Skip to Content


Print page

WCIRB Releases Study on Cumulative Trauma Claims

The WCIRB has released The World of Cumulative Trauma Claims report which focuses on workers’ compensation claims for workplace injuries that result from repetitive mentally or physically traumatic activities extending over a period of time. The report discusses how cumulative trauma (CT) claims differ from other types of workers’ compensation claims, and examines the recent increase in reported CT claims and other related trends.

Key findings of the CT report include:

  • CT claim rates have grown by 50% since 2008.
  • All recent CT claim growth is in the Los Angeles and San Diego regions, which now generate 75% of CT claims but only 50% of other claims.
  • Recent CT claim growth is spread across many industries in the Los Angeles region, though the Manufacturing and Hospitality sectors have experienced the most significant growth rates.
  • CT claim growth in Southern California is concentrated in lower wage workers.
  • About 40% of recent CT claims are filed after the employee is terminated, about three-quarters are initially denied in part or in whole, and about one-quarter also involve an accompanying specific injury claim.
  • CT loss payouts are much slower than for specific injury claims and on average ultimate costs for CT claims are higher than for specific injury claims.
  • CT claims incur significantly more medical-legal and lien payments than other types of claims, particularly at early and mid-maturity levels.
  • CT claims stay open longer than other claims, but claim settlement rates have accelerated across all claim types.

The complete report is available at the link below and in the Research section of the WCIRB website.

WCIRB Research Forum

The WCIRB will hold a WCIRB Research Forum webinar to discuss the report and findings from the WCIRB Medical Fraud Enforcement Study. Register to attend the free webinar at the link below:

Cumulative Trauma Study and Impact of Medical Fraud Enforcement Study
Thursday, October 18, 2018, 10:00 AM – 11:00 AM PT

Cumulative Trauma Study - Dave Bellusci, EVP and Chief Actuary; Tony Milano, VP, Actuary
Impact of Medical Fraud Enforcement Study - Tim Basuino, Medical Analytics Specialist
For those unable to attend the live webinar, a recording will be posted in the Research section of the WCIRB website following the event.

October 17, 2018