Last Updated:
August 04, 2026
- State status reflects current laws at the time of update, not pending legislation or future dates upon which marijuana becomes available medicinally or recreationally. States with legislation that has passed but has a future enactment date will be marked with an asterisk *.
- CBD oil can be made with or without THC. This chart is specifically referring to CBD Oil with THC as an ingredient. CBD oil with THC is illegal in states marked as "Fully Illegal".
- All "statuses" are subject to state limits. E.g., CBD Oil may only be legal to 0.5% THC, or marijuana may only be legal to one ounce. Please consult state laws.
Marijuana Legalization and Workplace Drug Testing
Marijuana legalization does not automatically prevent employers from testing for marijuana or maintaining workplace drug and alcohol policies.
Employment requirements differ by state. Some states provide protections related to lawful off-duty marijuana use, medical marijuana participation, or employment decisions based on a marijuana test result. Other states provide employers broader discretion, particularly for safety-sensitive positions, regulated work, workplace impairment, and drug-free workplace programs.
Employers operating across multiple states face an added challenge. A drug testing policy permitted in one state might require different procedures, exceptions, or employment decisions in another.
DISA supports employers with workplace drug testing programs designed around applicable regulations, company policy, testing circumstances, and workforce risk.
» Workplace Drug Testing Programs
State Marijuana Laws vs. Federal Drug Testing Requirements
State marijuana laws and federal drug testing requirements operate under separate legal frameworks.
For employees subject to Department of Transportation drug and alcohol testing regulations, marijuana remains part of the required DOT drug testing panel. State-authorized recreational or medical marijuana use does not provide a basis for changing a confirmed marijuana-positive result to negative under current DOT rules.
This distinction matters for employers with federally regulated or safety-sensitive employees. A state law permitting marijuana use does not replace applicable federal testing requirements.
Employers should identify which employees fall under federal regulations, which employees fall under company-authority testing, and which state employment laws apply before making policy or testing decisions.
» DOT Drug Testing
» Drug Testing Compliance Solutions
How Drug Testing Works with THC, Marijuana, and Hemp
THC laws have become more complex as states regulate marijuana, hemp-derived products, medical programs, and intoxicating cannabinoid products differently.
For workplace drug testing, product legality and drug test results are separate issues. A legally purchased product containing THC might still produce a marijuana-positive drug test result.
Employers should also avoid assuming that a product marketed as hemp, CBD, Delta-8, or another cannabinoid product eliminates drug testing risk. Product composition varies, and certain products contain enough THC or related compounds to create a positive marijuana test result.
Employees subject to drug testing should understand their employer's policy and any federal requirements applicable to their position.
Drug Testing Programs for Employers
Marijuana laws continue to change, but employers still need consistent, defensible drug testing programs.
DISA provides workplace drug and alcohol testing services for employers across the United States, including program management, collection services, laboratory testing, Medical Review Officer services, random testing programs, policy support, and regulatory compliance services.
For employers operating across multiple jurisdictions, DISA helps align testing programs with applicable federal requirements, state requirements, company policy, and workforce needs.
As of August 2026, 24 states and the District of Columbia permit non-medical marijuana use by adults. State laws differ regarding possession, retail sales, home cultivation, public use, and other restrictions.
Refer to the map above for the latest information.
No. Marijuana laws differ by state. Some states permit adult recreational and medical use, some permit medical use only, some maintain limited THC or cannabinoid programs, and others prohibit marijuana.
No. THC restrictions differ based on state law, product type, THC concentration, source, and intended use. Marijuana-derived THC and hemp-derived THC products do not always receive the same legal treatment.
No. State legalization does not automatically prohibit workplace marijuana testing. Employment protections and testing restrictions differ by jurisdiction, industry, position, and testing circumstance.
Yes. Marijuana remains part of the DOT drug testing panel. DOT-regulated employees remain subject to federal drug testing requirements regardless of state recreational or medical marijuana laws.
No. Under current DOT requirements, documentation from a state medical marijuana program does not provide a legitimate medical explanation for a confirmed marijuana-positive DOT drug test.
Some CBD, hemp, and cannabinoid products contain THC. Use of a product containing THC presents a risk of a marijuana-positive drug test result. Product labeling does not eliminate that risk.
There is no single answer for every employer. The appropriate testing program depends on federal requirements, state law, employee duties, safety considerations, company policy, contractual requirements, and organizational risk. Employers should review marijuana testing decisions as part of their broader workplace drug and alcohol policy.
