Loss Development Over the Past Decade: The pandemic temporarily disrupted California workers’ comp loss trends but did not stop the steady growth in medical and indemnity claim costs, and a new CWCI study indicates that medical costs may be accelerating in the post-pandemic era. More details are available under the news tab and in Bulletin…

A new CWCI study finds that the growth of CT claims in California workers’ comp cannot be fully explained by factors such as employment or population growth, overall claim frequency, or changes in the composition of the workforce. Instead, the increase appears to reflect broader structural changes within the system, with one of the most…

CWCI’s follow-up study on medical inflation in California workers’ comp reviews prices, utilization and billing practices across major medical service categories. The report traces much of the recent growth in medical costs to the increased use of unlisted billing codes which are not subject to fee schedule price controls, especially for professional services and DMEPOS. …

A new CWCI Research Update report provides new data on IMR volume and outcomes over the 11-year period ending in 2025.  The report notes the post-pandemic growth in IMR activity as changes in the geographic concentration of IMR in California, the mix of service and drug disputes that are submitted to IMR, and the uphold…