Maine drug testing laws for employers: pre-employment testing rules (2026)

Maine regulates employer drug testing in more procedural detail than most states. As of October 2026, an employer that tests under 26 M.R.S. sections 681 to 690 must have a written policy approved by the Maine Department of Labor, may test an applicant only after offering the job (or a place on a roster of eligibility), must give the applicant a copy of the policy before the test, must use a qualified laboratory and confirm every non-negative screen, and may receive a confirmed positive only from a medical review officer. A 2026 rewrite of the law, effective July 29, 2026, also made legal medical cannabis use a legitimate medical explanation for a positive result.

Does Maine have a drug testing law for private employers?

Yes, and it applies to almost every employer that chooses to test. The substance use testing subchapter says it does not require or encourage testing, but an employer that does test is limited by it and must follow its own approved policy fully once a test starts. "Employer" means any public or private entity with one or more employees and expressly includes an employment agency, and "applicant" includes anyone using an employment agency's services (26 M.R.S. section 682).

Three points set Maine apart:

• State approval before testing. The employer sends its final written policy to the Department of Labor and may not implement it, or any later change, until the department approves it (section 683(2), section 686). The department's substance use testing page publishes model policies, a list of certified drug-testing labs and a sample waiver for temporary employees.
• No local ordinances. Section 681(4) bars municipalities from regulating an employer's use of substance use tests, so the state rule is the whole picture for non-federal testing.
• A federal-program exemption with a catch. Section 681(8)(C) exempts an employer subject to a federally mandated testing program, such as DOT testing, but only if it has at least one federally tested employee in Maine and tests its other applicants and employees under the same federal regulations.

What changed in Maine's drug testing law in 2026?

Public Law 2025, chapter 666 (LD 2110, "An Act to Update Employer Substance Use Testing Policy Requirements") was approved by the Governor on April 13, 2026. It carried no emergency clause, so it took effect on July 29, 2026, the general effective date for the session's nonemergency laws set by the Maine Legislature. The Labor Committee's enacted law summary lists the main changes, and the amended text now in force says:

• Department of Labor approval is required for any testing program; an employer that discontinues an approved policy goes inactive and may not test (section 686(1)(B-1)).
• "Arbitrary" testing is now "criteria-based testing", which includes client-required or site-specific testing, and "random testing" is defined as a neutral selection in which every employee has an equal chance (section 682).
• "Probable cause" testing of employees is now "reasonable suspicion" testing based on observable behaviors, with the facts written down and given to the employee before the test (section 684(2)).
• A confirmed positive result may be reported to the employer only by a medical review officer, who must contact the applicant or employee to check for a legitimate medical explanation (section 683(8)(E)).
• "Legitimate medical explanation" now includes a valid prescription taken as prescribed and legal use of cannabis under the Maine Medical Use of Cannabis Act (section 682(3-B)).

When can a Maine employer test a job applicant?

Only after an offer. Under section 684(1), an employer may require, request or suggest a test only if the applicant has been offered employment, or offered a place on a roster of eligibility that may not be larger than the number of applicants the employer hired in the preceding six months. The offer may be conditioned on a negative result. For applicant testing, the written policy may designate every position as subject to testing (section 683(2)(B)).

The steps an approved applicant test has to follow, from section 683:

1. Give the applicant the approved policy before the test. The 30-day and 60-day notice periods for employees do not apply to applicants (section 683(3)).
2. Do not ask the applicant to sign away rights. Forms that absolve the employer of liability or waive rights under the subchapter are void (section 683(4)).
3. Collect the sample in a medical facility supervised by a licensed physician or nurse, which can be a first aid station at the work site. No observed urine collection and no requirement to remove clothing, other than outer garments and belongings (section 683(2)(C)).
4. Offer a split portion. If the applicant asks at collection, part of the sample is set aside for the applicant's own test at a lab of the applicant's choosing, at the applicant's cost. Applicants, unlike employees, have no right to a blood test instead of urine (section 683(5)).
5. Use a qualified laboratory and confirm every non-negative screen. The lab must show satisfactory proficiency testing with the National Institute on Drug Abuse, the College of American Pathologists or the Association for Diagnostics and Laboratory Medicine and meet state health department rules (section 683(6) and (7)). Cannabis confirmation cutoffs may not be lower than 15 nanograms of THC-COOH per milliliter of urine (section 683(2)(G)).
6. Route positives through a medical review officer, tell the applicant the result promptly, give a copy of the lab report on request, and allow three working days to explain or contest a confirmed positive, with an appeal available at no cost (section 683(2)(K), (8)).
7. Pay for the test. The employer pays for every test it requires, requests or suggests; the applicant pays only for additional tests (section 683(9)).

A confirmed positive or a refusal may then be a factor in refusing to hire, but only subject to the Maine Human Rights Act, the state's medical cannabis law and federal law (section 685(2)(A)). If you hire the person before the result arrives, you can act on it only under the employee provisions of your policy, which include a rehabilitation opportunity before discipline for a first confirmed positive (section 685(2)(A-1), (B)). Test results are confidential and may be shared only with the person tested, necessary personnel and a treatment provider unless the person consents (section 685(3)).

What does Maine say about marijuana and hiring?

Maine has both medical and adult-use cannabis, and they work differently for an employer:

• Medical patients. The Maine Medical Use of Cannabis Act says an employer may not refuse to employ or otherwise penalize a person solely for status as a qualifying patient or caregiver, unless doing so would put the employer in violation of federal law or cost it a federal contract or funding (22 M.R.S. section 2430-C(3)). Since July 29, 2026, legal medical cannabis use also counts as a legitimate medical explanation, so a medical review officer reports such a result as a confirmed positive with a legitimate medical explanation (26 M.R.S. sections 682, 683(8)(B-1)).
• Adult-use. 28-B M.R.S. section 112 says an employer need not permit or accommodate cannabis in the workplace, may enforce policies restricting use at work or within the course of employment, and may discipline employees under the influence at work. The section does not contain a protection for off-duty adult-use.
• Testing limits still apply. Whatever your cannabis position, a THC test of an applicant must meet every procedural rule above, including the 15 ng/mL confirmation floor.

Which federal rules still apply in Maine?

• DOT-regulated roles. Commercial drivers and other safety-sensitive transportation workers are tested under 49 CFR Part 40. For drivers, 49 CFR 382.301 requires a verified negative pre-employment result before the first safety-sensitive function. DOT's Part 40 guidance, updated May 15, 2026, says a medical review officer may not verify a marijuana positive as negative because of a state-licensed product, even after the April 28, 2026 order moved FDA-approved and state-medical-license marijuana to Schedule III.
• Federal contractors. The FAR Drug-Free Workplace clause requires a published policy statement and an awareness program; it does not itself require testing, so any testing you add for non-DOT staff in Maine still runs through an approved state policy.
• The ADA. The EEOC does not treat a test for illegal drug use as a medical exam, and after a positive result an employer may ask about lawful medications to validate it. See pre-employment medical exams under the ADA.

What should staffing agencies placing workers in Maine do?

Maine is one of the few states whose testing statute speaks to agencies directly. An employment agency is an "employer" and its candidates are "applicants", so the agency needs its own approved policy before it tests anyone. Beyond that:

• Client-required tests. The 2026 definition of criteria-based testing covers testing a client requires before work on a project or site, and section 684(3)(C)(2-A) lets an employer set up a program when testing is required to retain a contract. Both still need Department of Labor approval.
• Temporary placement waivers. Section 683(4-A) lets an agency ask someone already on its payroll or roster for a written waiver allowing a test for a temporary placement, if the client has an approved policy and the person has not worked at that client in the previous 30 days. The test must otherwise follow the law, and the agency may not penalize a refusal to sign. The department publishes a sample waiver.
• Agency licensing is a separate question; see Maine staffing agency licensing.

Maine drug testing laws at a glance

A checklist before you test a candidate in Maine

1. Confirm the role is not entirely covered by a federal program you already run for Maine staff.
2. Get the policy approved, or adopt the department's model applicant policy, before the first test.
3. Make the written offer first, and say it depends on a negative result.
4. Hand the candidate the approved policy before collection, with no waiver or release form attached.
5. Use a collection site and lab that meet section 683, and route results through a medical review officer.
6. Give the candidate three working days to respond to a confirmed positive before you withdraw the offer.
7. File the annual statistical report the department requires of approved employers (section 683(8)(D)).

For how Maine compares with other states, read drug testing laws in hiring; for a policy you can adapt, see the pre-employment drug testing policy template; and for the rest of the Maine hiring process, including the ban-the-box rule on criminal history questions, see hiring employees in Maine and Maine's ban-the-box law. Neighboring rules in other states: Rhode Island also requires a conditional offer first.