Workers' Compensation California Terrorism Risk Assessment (Rel. January 4, 2019)
Workers' Compensation Risk Assessment California Earthquake (Rel. December 18, 2017)

Cumulative Trauma Claims

The World of Cumulative Trauma Claims (Rel. October 17, 2018)

Medical Cost Trends and Drivers

California Workers’ Compensation Aggregate Medical Payment Trends 

• Updated through Calendar Year 2019
  • Supplementary Statewide Data
• Update through Calendar Year 2018
  • Supplementary Statewide Data
• Update through Calendar Year 2017
• Update through Calendar Year 2016
• Update through Calendar Year 2015
• Update through Calendar Year 2014
• Update through Calendar Year 2013

Medical Cost Drivers Research

• Physical Medicine Treatments and Their Impact on Opioid Use and Lost Time in California Workers' Compensation (Rel. January 15, 2020)
• Treatment Patterns of Medical Providers Indicted for Fraud in California Workers' Compensation (Rel. December 3, 2019)
• Early Indicators of High-Risk Opioid Use and Potential Alternative Treatments (Rel. April 23, 2019) 
• California's New Drug Formulary - One-Year Checkup (Rel. August 30, 2019)
• Impact of the Affordable Care Act on California Workers' Compensation (Rel. May 3, 2018)
• Impact of the Medical Fraud Enforcement on California Workers' Compensation (Rel. October 16, 2018)

Allocated Loss Adjustment Expenses (ALAE)

Emerging Trends in California Workers’ Compensation ALAE Costs (Rel. January 5, 2017)
Analysis of Loss Adjustment Expense Trends (Rel. April 3, 2008)

Dual Wage Classifications

Comprehensive Evaluation of California’s Dual Wage Classifications (Rel. August 15, 2012)

Claim Frequency

Analysis of Changes in Indemnity Claim Frequency—January 2016 Update Report (Rel. January 7, 2016)
Analysis of Changes in Indemnity Claim Frequency—January 2015 Update Report (Rel. January 14, 2015)
Analysis of Changes in Indemnity Claim Frequency—2013 (Rel. December 2013) 
Analysis of Changes in Indemnity Claim Frequency (Rel. August 2012)