Workplace Drug Testing Laws in Maryland: What Employers Can Do

Federal law does not uniformly restrict private-sector drug testing. The Americans with Disabilities Act (42 U.S.C. § 12101 et seq.) prohibits discrimination based on disability and limits inquiry into medical conditions, but does not ban drug testing itself. The Drug-Free Workplace Act of 1988 (41 U.S.C. § 8101 et seq.) applies only to federal contractors and grantees, requiring a written policy and employee notification but not mandating testing.

The Department of Transportation (DOT) under 49 U.S.C. § 31306 requires drug testing for commercial drivers and safety-sensitive transportation positions. The Nuclear Regulatory Commission and Department of Energy regulate testing for nuclear industry workers. The Federal Railroad Administration mandates testing for railroad employees. OSHA (Occupational Safety and Health Administration) does not ban drug testing but may scrutinize employer post-accident testing policies if they discourage workers from reporting injuries.

The EEOC (Equal Employment Opportunity Commission) enforces federal anti-discrimination laws; drug testing itself is not prohibited, but discriminatory application of testing (e.g., testing only certain racial groups) violates Title VII of the Civil Rights Act of 1964 (42 U.S.C. § 2000e). Federally, there is no statutory 30-day notice requirement, no mandatory retest right, and no prohibition on testing non-safety-sensitive positions.

Maryland law imposes stricter procedural requirements on drug testing than federal law. Maryland Health-General Code § 19-707 establishes detailed requirements that all employers in Maryland must follow.

First, written notice: An employer must provide at least 30 days' written notice before implementing or changing a drug testing program. This notice must include the specific substance or substances to be tested, the method of testing (urinalysis, hair, blood, saliva), the consequences of testing positive or refusing to test, and the employee's right to request a retest. Simply notifying an employee on the day of a test does not comply with Maryland law.

Second, testing must not discriminate: Maryland's Human Relations Law (MD Code, State Government § 20-101 et seq.) prohibits discrimination based on race, color, national origin, sex, age (40+), disability, marital status, sexual orientation, and gender identity. An employer cannot use drug testing as a pretext to discriminate. For example, testing only Latino workers or only older workers, or testing more frequently in one department with a majority of a protected class, violates state law.

Third, retest rights: If an employee tests positive, that employee may request a retest of the same sample at the employee's own expense. The employer must retain the sample for a reasonable period to allow this. Maryland law does not require the employer to pay for the retest, but it does require that the retest be available.

Fourth, scope of testing: Maryland does not restrict testing to safety-sensitive positions like federal law does for contractors. Private employers may test all employees, and applicants before hire. However, reasonable suspicion testing (testing based on observed signs of impairment or erratic behavior) is permissible, as is random testing for safety-sensitive roles. Testing only because of a single positive result on a background screening or based solely on arrest (not conviction) may violate state law if not applied uniformly.

Fifth, employer coverage: Maryland's drug testing law applies to all employers in the state, regardless of size. There is no exemption for small employers. Public employers are also bound by these rules but must also comply with additional state civil service laws.

Sixth, remedies: Maryland law does not provide a private right of action with explicit damages, but violations may be challenged through the Maryland Commission on Civil Rights (for discrimination claims). Additionally, wrongful discharge claims and breach of contract claims may apply if an employee is terminated in violation of public policy or contractual terms. Damages may include back pay, reinstatement, and in some cases compensatory damages.

Maryland law contains several important exceptions and limitations. First, federal law preemption: Drug testing required by federal law (DOT for commercial drivers, nuclear industry, railroad workers, federal contractors under the Drug-Free Workplace Act) is not subject to Maryland's 30-day notice requirement if federal law itself mandates a shorter timeline or immediate testing. However, the employer must still comply with any additional Maryland notice requirements that do not conflict.

Second, safety-sensitive positions: While Maryland does not restrict testing to safety-sensitive roles, employers have greater latitude to conduct random testing and post-incident testing in genuinely safety-sensitive positions (e.g., commercial drivers, security officers, healthcare workers handling controlled substances). However, even in these roles, the 30-day notice requirement and retest right still apply to the initial testing policy.

Third, reasonable suspicion testing: An employer may test an employee based on reasonable suspicion of impairment or drug use (e.g., observed erratic behavior, failure of field sobriety test, clear signs of intoxication) without waiting for the 30-day notice period if the testing policy has been previously communicated. However, the suspicion must be documented and specific; generalized hunches or stereotyping do not suffice.

Fourth, post-accident testing: An employer may test an employee who has been involved in a workplace accident, but only if this is part of the employer's stated policy communicated in advance. The testing must be prompted by the accident itself (e.g., to determine cause), not as a pretext for random testing.

Fifth, criminal conviction vs. arrest: An employer may take action based on a drug conviction but not merely on an arrest. Maryland law and Baltimore ordinances protect workers from discrimination based solely on criminal arrest or record unless the offense is directly related to the job. A positive drug test that is not confirmed by a conviction may have limited legal weight if an employee is terminated based solely on the test result without other evidence.

Sixth, medical marijuana: Maryland legalized medical marijuana in 2014. Maryland law does not explicitly protect medical marijuana users from testing or termination based on a positive test, but a few court cases and administrative guidance suggest that if an employee is using medical marijuana pursuant to a physician's certification and the employee's position does not involve safety-sensitive duties, termination based solely on a positive drug test may be challenged as discriminatory based on disability (the underlying condition for which medical marijuana is prescribed). This remains an evolving area of law.

Seventh, collective bargaining: If an employee is covered by a union collective bargaining agreement, the terms of that agreement may provide additional protections or may limit testing rights. The specific agreement governs.

Step 1: Document everything immediately. Write down the date, time, and specific nature of any communication from your employer about drug testing. Keep copies of any written notice, email, or policy document the employer provided. If you were tested, note the date, method (urinalysis, hair test, etc.), location, and the names of any witnesses. If you received a positive result, obtain a copy of the test report and any correspondence from the employer. Keep a record of any conversations with supervisors or HR. This documentation is essential if you later file a complaint.

Step 2: Review the employer's notice and testing policy. Maryland requires at least 30 days' written notice before testing begins. Check whether the notice you received included: (a) the specific substances being tested, (b) the testing method, (c) the consequences of a positive result or refusal, and (d) your right to request a retest. If the notice was missing any of these elements or gave you fewer than 30 days' notice, the testing program may violate Maryland Health-General Code § 19-707. If you believe the testing was discriminatory (e.g., you were the only person in your group tested, or testing was applied differently based on race, gender, or age), document those facts separately.

Step 3: Request an internal review or appeal. Contact your employer's HR department or the person who notified you of the positive result. Send a written email or letter (keep a copy) stating that you object to the test result and request a retest of the original sample at your own expense. Maryland law gives you the right to request a retest; the employer must have retained the original sample. Ask the employer in writing to confirm that a retest was conducted and to provide you with the retest results. If the employer refuses to retest or claims the sample was not retained, this is a violation of state law. Document the refusal in writing.

Step 4: File a civil rights complaint with the Maryland Commission on Civil Rights (MCRC). If you believe the testing was discriminatory, or if the employer violated the notice or retest requirements and you were harmed (e.g., terminated), file a complaint within one year of the alleged violation. The MCRC's website is maryland.gov/mcr. You can file online or by mail. The complaint must describe: (a) your name and contact information, (b) the employer's name and address, (c) the date(s) of the alleged violation, (d) a detailed description of what happened, (e) whether you filed a charge with the federal EEOC (Maryland has a worksharing agreement), and (f) the relief you are seeking. Filing with the MCRC does not cost money and does not require an attorney, though having one helps. The MCRC will acknowledge receipt and assign an investigator. Do not wait until the one-year deadline approaches; file promptly.

Step 5: Consider filing a federal EEOC charge if discrimination is involved. If the drug testing was applied differently based on race, color, national origin, sex, age, disability, or another federal protected characteristic, you may file a charge with the U.S. Equal Employment Opportunity Commission (EEOC). For Maryland, the filing deadline is 300 days from the date of the alleged violation (Maryland is a "deferral state," meaning the MCRC is given first chance to investigate). You can file with the EEOC online at eeoc.gov or by visiting the Baltimore Field Office at 10 S. Howard St., Baltimore, MD 21201, or calling 1-800-669-4000. Filing a charge is also free. An EEOC charge adds federal law protection (Title VII of the Civil Rights Act) to your claim.

Step 6: Consult an employment attorney if the employer's actions resulted in termination, demotion, or other adverse action. Maryland attorneys specializing in employment law can evaluate whether you have a wrongful termination claim, a breach of contract claim, or a claim for violation of public policy (if the drug testing was part of a pattern of retaliation). An attorney can also help negotiate a settlement or represent you in mediation. Many employment attorneys work on a contingency basis (they take a percentage of your recovery) and offer free initial consultations. Contact the Maryland State Bar Lawyer Referral Service at 410-685-7878 or visit msba.org.