With an extensive and readable overview of the literature, the committee presents what we do know by examining the major issues:
- The extent and severity of drug use on and off the job.
- The strengths and weaknesses of methods for detecting drug use through standard drug tests.
- The effect of drug use on behavior, including the results of both laboratory and field studies that have examined work-related behavior and worker productivity.
- The effectiveness of interventions to deal with drug use, such as employee assistance programs, health promotion programs, and treatment programs for substance abuse.