Drug Testing Laws in Maryland

Maryland law allow employers to drug test applicants and employees.

By , J.D. UC Berkeley School of Law
Updated 2/21/2024

If an employer or a prospective employer in Maryland has asked you to take a drug test, you'll want to know your legal rights. Federal law places few limits on employer drug testing: Although the federal government requires testing by employers in a few safety-sensitive industries (including transportation, aviation, and contractors with NASA and the Department of Defense), federal law doesn't otherwise require – or prohibit drug tests. For the most part, this area is regulated by state and local laws.

Maryland allows employers to require drug tests, if they follow the state's procedures and rules.

Drug Testing for Maryland Applicants

Employers may require applicants to take drug tests. If the initial result of an applicant's test is positive for drugs, and the applicant voluntarily discloses that he or she is taking a legally prescribed medication, the employer may make a job offer conditional on a laboratory's confirmation of the test results.

Drug Testing for Maryland Employees

An employer may require employees to take drug tests for legitimate business purposes only.

An employer who requires drug tests must test samples at a certified laboratory. At the time of the testing, the employee may request the name and address of the lab. State law dictates the procedures for testing, confidentiality, and other procedures.

An employee who tests positive must be given:

  • a copy of the test results
  • a copy of the employer's written testing policy
  • written notice of any adverse action the employer plans to take based on the results, and
  • a statement of the employee's right to an independent confirmation test at the employee's expense.

Testing for Marijuana in Maryland

Medical and recreational marijuana are legal in Maryland, although the state legislature hasn't enacted legislation specifically protecting marijuana users in the workplace.

That means (as of early 2024) employers in Maryland can drug test applicants and employees for the presence of marijuana, and fire or otherwise discipline them based on a positive test. In the near future, however, the state legislature could decide to follow other states in enacting employment protections for workers who use marijuana.

Employers are encouraged to check the latest guidance on the Department of Labor website or consult with an employment attorney if they have questions.

Legal Claims Arising From Drug Testing

Even though Maryland law allows employers to drug test in some circumstances, employees and applicants may have legal claims based on who was tested, how the test was conducted, or how the results were used. Here are some examples:

  • Violation of state laws and procedures. Although an employer has the legal right to test, it must follow the state's requirements. For example, a Maryland employee could challenge an employer who didn't have a legitimate business reason to test or didn't provide the documents required following a positive test result.
  • Disability discrimination. An applicant or employee who is taking medication for a disability is protected by the Americans with Disabilities Act (ADA). Some prescribed medications turn up on drug tests, and some drugs that would otherwise be illegal (such as opiates) are legitimately prescribed for certain conditions. If an applicant is turned down because of a positive drug test, and the applicant's medication was legally prescribed for a disability, the company could be liable.
  • Other discrimination claims. An employer who singles out certain groups of employees – for example, by race, age, or gender – for drug testing could face a discrimination claim.
  • Invasion of privacy. Even an employer that is allowed or required to test might violate employee privacy in the way it conducts the test. For example, requiring employees to disrobe or provide a urine sample in front of others could be a privacy violation.
  • Defamation. An employee might have a valid claim for defamation if the employer publicizes an employee's positive test result, if the employer has reason to know that the test might not be accurate. For example, if a retest showed that the first test was a false positive or the employee has appealed the first test, the employer may be liable for revealing the results of the positive test beyond those with a need to know.
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