National Testing Services Contact

Drug testing in Michigan

State laws, marijuana laws, and employer compliance

Recreational marijuana: LegalMedical marijuana: LegalDOT rules apply nationwide
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For employers

Michigan drug testing laws

Governing law

Michigan Regulation and Taxation of Marihuana Act (MRTMA); Michigan Medical Marihuana Act

What you can do

Employer rights

  • Pre-employment testing is allowed
  • Random testing is generally permitted
  • Reasonable suspicion testing is lawful
  • Post-accident testing is allowed
  • Return-to-duty and follow-up testing are permitted
  • Employers can refuse to hire or terminate over positive results
  • Employers can ban drug use and impairment at work
What you must do

Compliance requirements

  • Keep written drug testing policies
  • Apply policies consistently and fairly
  • Use certified laboratories
  • Define impairment standards clearly
  • Follow federal rules for DOT-regulated and safety-sensitive roles

Michigan specifics

Workers' Compensation and Workplace Safety

  • Employers can use drug testing in post-accident investigations and workplace safety programs

Cannabis

Michigan marijuana laws

Recreational · Legal

Recreational use

  • Adults 21 and older may possess and use marijuana under state law
  • Public use remains restricted
Medical · Legal

Medical use

  • Qualified patients may use marijuana under the Michigan Medical Marihuana Act
At work

Workplace impact

  • Employers can keep drug-free workplace policies
  • Employers can ban marijuana use during work hours
  • Positive THC results may still affect employment decisions
  • Employers generally need not accommodate marijuana use or impairment
  • Federal contractors and DOT-regulated employers remain under federal testing rules

Best practices

Staying compliant in Michigan

Develop written drug-free workplace policies
Define workplace impairment standards clearly
Monitor Michigan marijuana law changes
Use certified providers
Apply testing procedures consistently
Comply with federal rules where they apply

Our services

Testing services in Michigan

NTS provides accurate, confidential, and legally defensible testing through our nationwide collection network.

Urine drug testingHair follicle testingOral fluid (saliva) testingNail drug testingDOT drug and alcohol testingCourt-ordered testingRandom and pre-employment screening

Sources & legal references

  1. MRTMA
  2. Michigan Medical Marihuana Program
  3. Michigan Department of Labor and Economic Opportunity
  4. MIOSHA
  5. U.S. DOT Drug & Alcohol Testing Regulations
  6. NCSL Marijuana Laws by State

Laws change often. This page is general information, not legal advice. Check official state agencies or consult legal counsel for current requirements.

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Testing employees in Michigan?

Call the office to set up a compliant program, or schedule onsite collections.

Office601-602-2445 Onsite601-633-7733
Visit1520 Adeline St, Ste. 20, Hattiesburg, MS 39401