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

New Mexico has no general statute that limits when or how a private employer may drug test job applicants, so pre-employment testing is allowed. As of October 2026, the limits are about marijuana: NMSA 26-2B-9, part of the Lynn and Erin Compassionate Use Act, makes it unlawful to take an adverse employment action against an applicant based on conduct the medical cannabis law allows, unless the job is one the employer deems safety-sensitive, the conduct happened at work or during work hours, or a federal monetary or licensing-related benefit is at stake. For adult-use cannabis, the 2021 Cannabis Regulation Act lets employers keep a written zero-tolerance policy that may act on any amount of THC.

Does New Mexico have a drug testing law for private employers?

Not a general one. We found no New Mexico statute that sets notice, laboratory or confirmation requirements for private employer drug tests, so an employer writes its own policy. What New Mexico does regulate is the consequence of a marijuana result, through two statutes that work differently:

• the medical cannabis employment protection, NMSA 26-2B-9, added to the Lynn and Erin Compassionate Use Act by section 11 of Senate Bill 406 (2019); and
• the employer protections in the adult-use law, NMSA 26-2C-34, enacted as section 34 of the Cannabis Regulation Act, House Bill 2 (2021 special session), which allows personal use by people twenty-one or older.

Can a New Mexico employer refuse to hire a medical cannabis patient?

Section 11 of SB 406 reads: "Unless a failure to do so would cause the employer to lose a monetary or licensing-related benefit under federal law or federal regulations, it is unlawful to take an adverse employment action against an applicant or an employee based on conduct allowed under the Lynn and Erin Compassionate Use Act." The protection names applicants, so it reaches hiring decisions. It has two limits written into the same section. Nothing in it:

• restricts "an employer's ability to prohibit or take adverse employment action against an employee for use of, or being impaired by, medical cannabis on the premises of the place of employment or during the hours of employment"; or
• applies "to an employee whose employer deems that the employee works in a safety-sensitive position."

The act defines a safety-sensitive position as one "in which performance by a person under the influence of drugs or alcohol would constitute an immediate or direct threat of injury or death to that person or another." Because the exception turns on what the employer "deems," write the designation down for each role before you recruit for it, and make sure the duties actually fit the definition.

In practice: a registered patient applying for a desk job who tests positive for THC, with no sign of use or impairment at work, is the case the statute protects. Refusing to hire that person on the test alone is the decision to take to counsel first. A forklift, driving or patient-care role that you have designated safety-sensitive is outside the protection.

The statute does not spell out a remedy. The Legislative Finance Committee's fiscal impact report on SB 129 (2026) records the Workforce Solutions Department's view that the Compassionate Use Act "does not provide a remedy for employees who experience a prohibited employment action," while protections under the New Mexico Human Rights Act "may be available" where an action is disability discrimination. SB 129, which would have barred state and local government employers from controlling employees' medical cannabis use outside work hours, died in the 2026 session.

Can a New Mexico employer have a zero-tolerance policy?

Yes, as far as the adult-use law goes. Section 34 of the Cannabis Regulation Act says that, "Unless there is an agreement between the employer and employee," nothing in the act shall:

1. restrict an employer's ability to prohibit or take adverse employment action for "impairment by or possession or use of intoxicating substances at work or during work hours";
2. require an employer to do anything that would violate federal law or regulations or "result in the loss of a federal contract or federal funding"; or
3. prevent an employer from adopting "a written zero-tolerance policy regarding the use of cannabis products," which "may permit the discipline or termination of an employee on the basis of a positive drug test that indicates any amount of delta-9-tetrahydrocannabinol or delta-9-tetrahydrocannabinol metabolite."

The act defines "adverse employment action" to include "refusing to hire or employ a person," it does not apply to employees of employers covered by Title 2 of the federal Railway Labor Act, and it does not interfere with collective bargaining agreements. The zero-tolerance clause lives in the adult-use law; it does not repeal the medical patient protection in 26-2B-9. A policy that rejects every THC-positive candidate therefore works for adult-use users but still needs a safety-sensitive designation, or another listed exception, before it is applied to a registered patient.

Which federal rules still apply in New Mexico?

• DOT testing for commercial drivers and other safety-sensitive transportation roles follows 49 CFR Part 40, with a verified negative before the first safety-sensitive function (49 CFR 382.301). Both New Mexico statutes make room for federal requirements: 26-2B-9 for a federal monetary or licensing-related benefit, and 26-2C-34 for federal law, contracts and funding.
• Rescheduling. The April 28, 2026 final order moved FDA-approved and state-medical-license marijuana to Schedule III, but DOT's Part 40 Q&A, updated May 15, 2026, says a New Mexico patient card, physician certification or dispensary receipt still cannot turn a marijuana positive into a verified negative.
• Federal contractors and grantees. The FAR Drug-Free Workplace clause applies, and the federal-benefit exception in 26-2B-9 and the federal-contract clause in 26-2C-34 are the routes to rely on; document which contract or grant is at stake.
• The ADA and state disability law. See pre-employment medical exams under the ADA before asking a candidate about prescriptions or a medical card after a positive.

What should staffing agencies placing workers in New Mexico do?

• Get the safety-sensitive designation in the job order. The exception depends on the employer deeming the position safety-sensitive, so agree with the client in writing which assignments are designated, and why, before you screen.
• Separate medical and adult-use outcomes. Ask your collection vendor's medical review process to record when a candidate presents a registry card, so a THC positive from a registered patient is routed for review instead of an automatic decline.
• Watch federal-contract placements. Where a client's federal contract or funding requires a drug-free workplace, note it in the job order; both statutes give way there.
• Criminal history is separate. New Mexico's limits on asking about convictions are covered in New Mexico ban-the-box rules and New Mexico background check laws.

For registration and onboarding, see New Mexico staffing agency licensing, hiring employees in New Mexico and New Mexico E-Verify requirements; for recorded screening calls, New Mexico's recording consent law.

New Mexico drug testing laws at a glance

A checklist before you test a candidate in New Mexico

1. List every role, and designate in writing the ones that meet the safety-sensitive definition.
2. Write the policy with separate paths for adult-use positives and registered-patient positives.
3. State in the posting or offer that the offer is conditional on a drug test.
4. Route any THC positive from a registered patient in a non-designated role to review, not automatic rejection.
5. Record any federal contract, funding or licensing requirement that applies to the role.
6. Draft from the drug testing policy template and compare states in drug testing laws in hiring; neighboring Arizona and Texas take different approaches.