The WCIRB conducts research to assist in the formulation of proposed changes to the Insurance Commissioner’s regulations. Classification research studies are presented to the WCIRB's Classification and Rating and Governing Committees and may be included in a WCIRB regulatory filing submitted to the California Insurance Commissioner for approval. Below are reports from the past 10 years.
2023
2022
2021
2020
2019
- Report on the Cotton Farms and Batting Study (October 15, 2019)
- Report on Hardware Stores and Hardware Dealers Study (May 7 and May 30, 2019)
- Report on Cotton Merchants and Warehouse Study (May 7, 2019)
- Report on the Review of Dual Wage Classification Thresholds (May 7, 2019)
- Report on the Hotel/Motel Industry Study (May 7, 2019)
- Report on Cider Manufacturing Industry Study (March 19, 2019)
- Report on Aircraft Industry Ticket Sellers and Information Clerks Study (January 22, 2019)
- Report on Ice Manufacturing, Ice Dealers, Creameries and Dairy Products Manufacturing Study (January 22, 2019)
- Report on Wrecking or Demolition and Building Raising or Moving Special Industry Classification Procedures Study (January 22, 2019)
- Report on Non-Electronic Instrument Mfg. Study (January 22, 2019)
2018
2017
2016
2015
2014
- Report on Concrete Sawing or Drilling Industry (December 17, 2014)
- Report on Dual Wage Construction or Erection Classifications Time Card Verification of Hourly Wage (December 17, 2014)
- Report on the Dual Wage Threshold Painting Industry (December 17, 2014)
- Report on Farmers’ Markets and Amusement Parks or Exhibitions (December 17, 2014)
- Report on Dual Wage Thresholds: 5190/5140, Electrical Wiring; 5183(1)/5187(1), Plumbing; 5183(2)/5187(2), Refrigeration Equipment; 5538/5542, Sheet Metal Work (December 17, 2014)
- Report on Magnetic Tape Manufacturing (December 17, 2014)
- Report on Mining and Quarries (December 17, 2014)
- Report on Electrical Apparatus and Electric Appliance Manufacturing (December 17, 2014)
- Report on Retail Dry Cleaning or Laundries, Commercial Laundries and Dry Cleaning or Dyeing (December 17, 2014)
- Report on the Refuse Collection Industry (May 13, 2014)
- Report on Leasing Agents in the Property Management Industry (May 13, 2014)
- Report on Mobile Food Vending Operations (March 18, 2014)
- Report on Contractors — Executive Supervisors (March 18, 2014)
- Report on Wiping Cloth or Rag Dealers (January 7, 2014)