Last verified: March 2026

Montana Protects Off-Duty Cannabis Use

Montana is one of the few states where employers cannot discriminate against employees solely for off-duty cannabis use. HB 701 (the 2021 implementation bill for I-190) amended Montana's "lawful products" employment protection statute to include marijuana. This means that legal cannabis use during off-duty hours receives the same protections as legal alcohol use or tobacco use.

An employer may not refuse to employ or may not discharge an employee or otherwise disadvantage an employee with respect to compensation, terms, conditions, or privileges of employment because the employee lawfully uses a lawful product off the premises of the employer during nonworking hours.

Montana Code Annotated 39-2-313

What This Means for Employees

• Off-duty protection: Employers cannot fire, refuse to hire, or otherwise penalize you solely because you use cannabis during non-working hours, off the employer's premises
• Same as alcohol/tobacco: Cannabis is treated the same as other lawful products under Montana's existing employment protections
• Applies statewide: This is a state statute, not a municipal ordinance — it applies to all Montana employers

What Employers CAN Still Do

Montana's employment protections are not absolute. Employers retain significant authority:

Drug-Free Workplace Policies

Employers can maintain drug-free workplace policies that prohibit cannabis use, possession, or impairment during working hours or on company property. Violating a drug-free workplace policy is still grounds for disciplinary action.

Drug Testing

Employers can drug test employees, including pre-employment screening, random testing, and for-cause testing. However, the purpose of testing should be to detect impairment rather than off-duty use. Montana law encourages impairment-based policies rather than zero-tolerance approaches that penalize off-duty use.

Impairment-Based Discipline

Employers can take action against employees who are impaired on the job. The challenge is distinguishing between current impairment and residual THC from legal off-duty use. Montana's approach encourages employers to focus on:

• Observable signs of impairment (not just positive drug tests)
• Job performance issues
• Safety concerns specific to the position

Federal Requirements

Employers with federal contracts, DOT-regulated positions, or safety-sensitive roles may still be required to enforce zero-tolerance cannabis policies under federal law. This includes:

• Commercial drivers (CDL holders)
• Federal contractors and grantees
• Occupations regulated by the Department of Transportation
• Positions requiring federal security clearances

Montana vs. Other Legal States

Montana's approach is notable because it uses an existing, established legal framework ("lawful products") rather than creating cannabis-specific employment law. This gives the protections a strong statutory foundation.

Practical Advice for Montana Workers

• Know your employer's policy: Review your employee handbook and drug policy. Even with state protections, understanding your employer's specific approach is important.
• Document everything: If you believe you were penalized solely for off-duty cannabis use, document the circumstances. Montana's Wrongful Discharge from Employment Act (MCA 39-2-901 et seq.) provides a legal framework for wrongful termination claims.
• Federal jobs are different: If you work for a federal agency or federal contractor, state protections do not override federal law. Federal employees and contractors should assume zero-tolerance policies apply.
• Safety-sensitive positions: Even under Montana law, employers have stronger grounds for restrictive policies in positions where impairment poses safety risks.
• Consult an attorney: Employment law questions specific to your situation should be discussed with a Montana employment attorney.

Official Sources

• MCA 39-2-313 — Lawful Products Employment Protection
• CARD Cannabis Program
• Montana Employment Relations Division