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Are there laws regulating drug testing in California?

Drug Testing Laws in California

  • This is a “HYBRID” state, meaning some employers are required to test certain workers –Public Transportation employees (California Public Utilities Commission).
  • Otherwise, this is a MANDATORY state with Supreme Court decisions limiting who and when employers may random drug test (safety and promotion to safety) in the workplace.
  • Limit suspicion less testing such as random testing to safety-sensitive occupations.

Enforcement is very strict for transportation related employers and their drug testing programs in California.  The California controlled substances and alcohol testing compliance program is enforced by the State of California Department of California Highway Patrol (CHP).  The Basic Inspection of Terminals (BIT) Program ensures the safe operation of regulated vehicles by motor carriers. Primarily, the intent of this program is to ensure truck terminals are inspected by the California Highway Patrol (CHP) on a performance-based inspection selection system.  The BIT inspection may include an audit of the employer’s controlled substances and alcohol testing compliance program.  See more on our California State Law page.