Glossary of Workers' Compensation Terms for Injured Workers

Division of Industrial Relations
The Department of Industrial Relations was established to improve working conditions for California's wage earners, and to advance opportunities for profitable employment in California.

Workers' Compensation Appeals Board
The Workers’ Compensation Appeals Board (WCAB) exercises all judicial powers vested by the Labor Code in a reasonable and sound manner and provides guidance and leadership to the workers’ compensation community through case opinions and regulations.

Medical Provider Network
A Medical Provider Network (MPN) is a group of health care providers (physicians and other specialists) used by your employer to treat workers injured on the job. NBSIA has contracted with Networks By Design, Inc. since October 20, 1986. You may access medical care by calling the Medical Assist line at (877) 854-3353 or by going to

Division of Workers' Compensation
Resources include: employers guide, forms, notices, and frequently asked questions.

California Chamber of Commerce