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Drugs, Alcohol and Smoking: Colorado

Drugs, Alcohol and Smoking requirements for other states

Federal law and guidance on this subject should be reviewed together with this section.

Author: Brightmine Editorial Team


  • Colorado employers may prohibit drug and alcohol use in the workplace. See Drugs and Alcohol.
  • Employers may prohibit the use of medical and recreational marijuana in the workplace. See Marijuana.
  • Employers may implement and enforce policies that prohibit the use, sale, possession, distribution, purchase and cultivation of drugs and alcohol in the workplace. See Drug and Alcohol Policies.
  • Employers may establish a drug and alcohol testing program for any job-related purpose consistent with business necessity and administered under the terms of the employer's written policy. See Drug and Alcohol Testing.
  • The Colorado Clean Indoor Air Act prohibits smoking, including the use of electronic smoking devices, in any indoor area, including any place of employment. See Smoking.
  • A "No Smoking" sign is not required to be posted. See Postings.
  • Employers are not required to have a smoking policy but may implement one that prohibits smoking in the workplace. See Smoking Policies.
  • Boulder has requirements relating to drug and alcohol testing. See Local Requirements.