Maryland is one of a smaller group of states with a standalone statute that regulates how private employers conduct job related drug and alcohol testing. The rules sit in the Health-General Article, not the Labor and Employment Article, and they cover laboratory certification, notice after a positive result, and an employee's right to an independent retest. This article walks through what Health-General 17-214 actually requires, how Maryland's cannabis law interacts with workplace testing, and how a positive test can affect a workers compensation claim or an unemployment insurance claim. Maryland law changes over time and the details below should be confirmed against the current statute text before an employer builds or revises a testing policy.
The core rule: a certified or permitted laboratory
Under Health-General 17-214, an employer that requires a person to be tested for job related reasons for the use of a controlled dangerous substance or alcohol must have the specimen tested by a laboratory that either holds a permit under the Maryland program or, if the lab is located outside the state, is certified or approved under the standards in subsection (f) of the same section. The statute defines "job related" broadly, as testing used by an employer for a legitimate business purpose, and it covers employees, contractors, and job applicants. At the time of testing, the person being tested can ask for the name and address of the laboratory that will test the specimen, and the employer has to provide it.
Subsection (f) also tells the state what to require of those laboratories. The Maryland Department of Health has to adopt regulations governing laboratory certification, and those regulations must require accreditation in forensic drug analysis, participation in a proficiency testing program, and compliance with cutoff levels set by the United States Department of Health and Human Services or by the department. In practice this means a Maryland employer cannot send specimens to just any lab; the lab needs the state permit or an equivalent certification if it sits outside Maryland.
Preliminary, on site screening is allowed, with conditions
Health-General 17-214 also addresses on site screening of job applicants. An employer may use a preliminary screening procedure, meaning a single use test device, to screen a job applicant for controlled dangerous substances, unless a collective bargaining agreement prohibits it. If that device is positive, the employer must still send the specimen to a certified laboratory for confirmation under the standard in subsection (b). An employer generally may not use a preliminary screening device on someone who is not applying for a job with that employer, although the statute lets an employer designate its own certified laboratory to also run the on site screening for applicants.
The statute sets specific device standards. A single use test device has to be sealed with a tamper evident closure or evidentiary tape, individually packaged, discarded after each test, and built so no component can carry over between tests. It also has to meet the Food and Drug Administration's requirements for commercial distribution and generally accepted cutoff levels, such as the ones in the federal Substance Abuse and Mental Health Services Administration's workplace testing guidelines. Employers using these devices must keep a written chain of custody record for each specimen and handle it in a way that protects the donor's identity and the integrity of the sample. A compliant collection program typically pairs a lab certified drug test cup or panel for the initial screen with a confirmation pathway at a certified laboratory, which keeps the employer inside the two step structure the statute describes.
What a Maryland employer owes an employee after a positive result
If a laboratory reports a confirmed positive result, Health-General 17-214(c) requires the employer to give the employee, contractor, or applicant four things: a copy of the laboratory test showing the result, a copy of the employer's written policy on drug and alcohol use, written notice of any intended disciplinary action or termination if the employer plans one, and a statement of the person's right to request an independent retest of the same specimen. That package has to go out in person or by certified mail, within 30 days of the date the test was performed.
The independent retest right belongs to the person who was tested, not the employer, and the statute is specific about cost: the person who requests the independent test pays for it. The retest has to be done by a laboratory that holds a Maryland permit, or an equivalent out of state certification. This is a detail worth getting right in a written policy, since the cost allocation runs the opposite direction from what some employers assume.
| Requirement | What Health-General 17-214 says |
|---|---|
| Laboratory standard | Must hold a Maryland permit, or be certified or approved if located out of state |
| On site screening device | Single use, tamper evident, FDA commercially distributed, SAMHSA aligned cutoffs |
| Positive on site screen | Must still be confirmed by a certified laboratory before acting on it |
| Notice after confirmed positive | Lab result copy, written policy copy, notice of intended action, notice of retest right |
| Timing and method of notice | In person or certified mail, within 30 days of the test date |
| Independent retest | Available at the tested person's request; the person pays the cost |
| Chain of custody | Written record required for each specimen, from collection until no longer needed |
Cannabis in Maryland: legal to use, not protected at work
Adult use cannabis is legal in Maryland, and the state's cannabis program is run by the Maryland Cannabis Administration. That legal status for personal use does not translate into a right to use, possess, or be impaired by cannabis on the job. Nothing in Maryland's Health-General drug testing statute, and no separate Maryland statute identified in this review, requires a private employer to accommodate cannabis use by employees or to tolerate impairment at work, for either adult use or medical cannabis. Maryland's medical cannabis program does not carry its own private sector employment protection provision, so a registered medical cannabis patient does not automatically have a right to a workplace accommodation the way an employee with a documented disability might have under other law. Employers that want a current, authoritative read on the cannabis program itself should check the Maryland Cannabis Administration's portal directly, since licensing and program details are updated there.
This does not mean an employer has unlimited discretion. Disability law can still apply to an underlying medical condition separate from cannabis use itself, and an employer generally should treat marijuana related policy questions the same way it treats other sensitive personnel decisions, with documented, consistently applied standards and legal counsel involved before anyone is disciplined or an offer is withdrawn. For a broader look at how legalization is reshaping testing policy across different states, see our related post on marijuana legalization and workplace drug testing.
Workers compensation: the intoxication and controlled substance defense
Maryland's workers compensation law includes a defense an employer or insurer can raise when drugs or alcohol contributed to a workplace injury. Under Labor and Employment 9-506, a covered employee generally is not entitled to compensation if the injury was caused solely by the effect of a depressant, hallucinogenic, hypnotic, narcotic, or stimulant drug, or by intoxication while on duty, unless the drug was taken under a physician's prescription. The statute goes further for controlled dangerous substances specifically: if the primary cause of the injury was the effect of a controlled dangerous substance, compensation generally is not available except for certain medical benefits, again with an exception if the substance was taken under a valid prescription and the use was not excessive or abusive. "Primary cause" is defined in the statute as the cause that is first in importance, which is a different and generally lower bar for the employer or insurer to meet than proving the drug was the sole cause.
These defenses interact directly with a post accident drug testing program, since a timely, properly documented test result is usually what supports the defense in a contested claim. Insurance carriers and the Workers Compensation Commission also look at documented testing programs when premium discount programs are involved; our post on workers comp drug testing premium discount programs covers how those state level incentive structures generally work.
Unemployment insurance: gross misconduct disqualification
A positive drug test or a drug related termination can also come up in a Maryland unemployment insurance claim. Labor and Employment 8-1002 defines "gross misconduct" as conduct that is a deliberate and willful disregard of the standards of behavior an employer rightfully expects, showing gross indifference to the employer's interests, or repeated rule violations that show a regular and wanton disregard of the employee's job obligations. An individual disqualified for gross misconduct cannot receive unemployment benefits starting with the week the discharge or suspension occurs, and the disqualification continues until the person is reemployed and earns at least 25 times the weekly benefit amount in covered employment. Gross misconduct is a distinct, more serious category than the "other misconduct" standard that sits in a separate section of the same subtitle, and a single positive test does not automatically qualify as gross misconduct; the Maryland Department of Labor's Division of Unemployment Insurance decides disqualification on the specific facts of each claim, so the outcome generally varies by case.
Federal preemption for DOT regulated positions
None of the Maryland rules above override federal testing requirements for safety sensitive transportation employees. Employers with drivers, pilots, or other workers covered by United States Department of Transportation testing rules must still follow the federal procedures in 49 CFR Part 40, including the federal collection, laboratory, and medical review officer process, regardless of state cannabis law or state notice timelines. A DOT regulated employer generally should build its safety sensitive testing program around Part 40 first, then layer Maryland's Health-General notice and retest requirements on top for any testing that falls outside the federal program, such as testing of non safety sensitive staff.
Building a compliant Maryland testing policy
A written policy is the common thread running through nearly every piece of this law. Health-General 17-214 assumes the employer has a written policy to hand over after a positive result, the workers compensation defenses are easier to support with documented, consistent testing practices, and an unemployment claim is easier to defend when the employer can show the rule that was violated and how consistently it has been enforced. Employers should also confirm that any laboratory they use, and any confirmation step after an on site screen, meets the certification standard in subsection (f), since using an uncertified lab undermines the entire chain even if every other step was handled correctly.
Frequently asked questions
Does Maryland require employers to use a certified drug testing laboratory?
Yes. Health-General 17-214 requires the laboratory to hold a Maryland permit, or, if it is located outside Maryland, to be certified or approved under the standards in the same statute.
What must a Maryland employer give an employee after a positive drug test?
A copy of the lab result, a copy of the employer's written drug and alcohol policy, written notice of any intended disciplinary action, and notice of the right to an independent retest, delivered in person or by certified mail within 30 days of the test date.
Can a Maryland employee request an independent retest, and who pays for it?
Yes, the person who was tested can request an independent retest of the same specimen at a permitted or certified laboratory, and under the statute that person pays the cost of the independent test.
Does Maryland law require employers to accommodate medical or recreational cannabis use?
No Maryland statute identified in this review requires a private employer to accommodate cannabis use or to tolerate impairment at work, for either adult use or medical cannabis; employers should still confirm current rules through the Maryland Cannabis Administration and consult counsel on specific cases.
Can a positive drug test affect a Maryland unemployment insurance claim?
It can, depending on the facts. Labor and Employment 8-1002 lets the state disqualify someone from benefits for gross misconduct, but a single positive test does not automatically meet that standard, and the Division of Unemployment Insurance evaluates each claim individually.
Do Maryland's drug testing rules apply to truck drivers and other DOT regulated positions?
Federal rules in 49 CFR Part 40 control the testing process for safety sensitive transportation employees, and employers generally should follow that federal program for those positions before applying Maryland's state notice and retest rules to any additional, non federally regulated testing.
This article is general information about Maryland law as reviewed against primary state and federal sources, and it is not legal or medical advice. Employers should confirm current statute text and consult qualified counsel before adopting or changing a testing policy.
