Louisiana Drug Testing Laws for Employers

The Cutoff Floor

This is the one to check first, because it inverts a decision most employers think is entirely theirs.

La. R.S. 49:1005(B) requires an initial marijuana cutoff of no less than fifty nanograms per milliliter. Everywhere else, lowering an immunoassay cutoff below 50 is a policy choice — stricter, more sensitive, the employer's call. In Louisiana it is unlawful for samples collected in the state, subject to the chapter's carve-outs.

Employers who have tightened cutoffs nationally in recent years, or whose vendor did so as a default, may be running an unlawful panel in Louisiana without anyone having made a decision about it.

Who and What the Chapter Covers

La. R.S. 49:1001 et seq. applies to private and public employers with one or more workers and has no headcount threshold and no small-employer exemption. Its limits are by panel and by industry:

• Panel: it applies only to testing for marijuana, opioids, cocaine, amphetamines and phencyclidine, and expressly neither precludes nor regulates testing for other controlled substances or for alcohol.
• Federal programs: anyone subject to a federally mandated drug testing program is outside the definition of employer, as is testing mandated by Federal Executive Order 12564.
• Utilities: producers and distributors of gas or electricity regulated by the Louisiana Public Service Commission are exempt.
• Oil and gas: anyone engaged or employed in the exploration, drilling or production of oil or gas in Louisiana or its territorial waters is exempt — a significant carve-out given the state's economy.
• On-site screening: exempt only where there are no negative employment consequences.

That last one deserves emphasis. A point-of-collection screen is outside the chapter only while nothing happens as a result. The moment a screen is used to send someone home, the employer is back inside the full laboratory, confirmation and cutoff regime.

Three sections older guidance still cites are gone: La. R.S. 49:1006, 1007 and 1008 were repealed by Acts 2004, No. 901, and there is no Section 1009. Laboratory and cutoff requirements now live in 49:1005 and confidentiality and immunity in 49:1012. And 49:1015 is public employee drug testing, not a small-employer exemption, which it is sometimes mistaken for.

You Cannot Bill the Employee

La. R.S. 23:897 makes it unlawful to pass the cost of a drug test to an employee or applicant, and treats each instance as a separate offense. For an employer testing at scale, a process that charges the individual — or a vendor arrangement that does so indirectly — creates an exposure that multiplies by headcount rather than sitting as a single violation.

What Louisiana Actually Gives You

Not a premium credit. Where Louisiana rewards testing is at the claim, and it does so generously.

La. R.S. 23:1081(1)(b) bars compensation for an injury caused by the employee's intoxication at the time of injury, with the burden initially on the employer. Alcohol presumptions run at 0.05 percent or less presumed not intoxicated, between 0.05 and 0.08 no presumption either way, and 0.08 or more presumed intoxicated. Evidence of on- or off-the-job use of a nonprescribed controlled substance under the federal schedules creates a presumption of intoxication.

Then comes the provision that makes the rest worth having. La. R.S. 23:1081(12) flips causation: once the employer has met the burden of proving intoxication at the time of the accident, it shall be presumed that the accident was caused by the intoxication, and the burden moves to the employee to prove intoxication was not a contributing cause. And under 23:1081(7)(b), a bare refusal to test immediately after the alleged accident creates the intoxication presumption outright, with no written-warning precondition of the kind Alabama requires.

Two procedural limits apply. Any positive must be verified or confirmed by gas chromatography, GC-MS or a comparably reliable method before it may be used. And results that do not exclude the possibility of passive inhalation of marijuana may not be used as a basis for disqualification — with the statute providing that total urinary cannabinoids by immunoassay at or above fifty nanograms per milliliter shall exclude that possibility. That is the same number as the cutoff floor, and not a coincidence.

The employer also remains responsible for reasonable emergency medical care until the worker is stabilized and ready for discharge from the acute care facility. Note too that the collection procedures required by 23:1081(9) are conditioned on rules adopted by the assistant secretary, which we could not locate in a verifiable official source; confirm those with the Office of Workers' Compensation before building to them.

The Policy That Controls Admissibility

Chapter 14 imposes no written-policy requirement on private employers — 49:1015(D) requires one only of public employers. In practice a written and promulgated policy is close to mandatory, because it controls whether your own test results can be used at all.

La. R.S. 23:1081(8) makes employer-administered test results admissible in the compensation proceeding when the testing was done pursuant to a written and promulgated substance abuse rule or policy. La. R.S. 23:1601(10)(a) is stricter on the unemployment side: the only employer-administered results that are admissible are those resulting from testing done pursuant to such a policy.

An unpublished or unacknowledged policy forfeits both. And because 23:1601(10)(d) frames four authorized testing purposes that must fall within the terms of the policy — investigating possible individual impairment, investigating workplace accidents or theft, maintaining safety for employees or the public or security of property or information, and maintaining productivity, quality or security — a Louisiana policy should tie its random program explicitly to the safety and productivity purposes, since random testing is not separately named there.

Cannabis: Silence, Not Permission

Louisiana is the unusual case of a medical cannabis state with no employment provision in either direction. Therapeutic marijuana is authorized by La. R.S. 40:1046, but there is no protection for a registered patient from adverse employment action, no accommodation requirement, and equally no express authorization for an employer to act on medical cannabis use of the kind Alabama and Mississippi provide.

The only employer-facing subsection is 40:1046(J), which provides that employers and their workers' compensation insurers shall not be obliged or ordered to pay for medical marijuana in claims arising under the Louisiana Workers' Compensation Law. Note also that 40:1046 carries a termination date of July 1, 2030, which most secondary guidance omits.

Because the statute is silent, two questions a multi-state employer will care about turn on case law rather than text, and both are unsettled: whether a Louisiana private employer may lawfully take adverse action against a registered therapeutic marijuana patient, and whether marijuana recommended under 40:1046 counts as a nonprescribed controlled substance for the intoxication presumption. Neither should be resolved from the code; both belong with counsel. Recreational cannabis is not legal, and possession remains a criminal offense under La. R.S. 40:966.

Where This Lands

Louisiana's employment base runs through energy, refining and petrochemicals, maritime and port logistics, industrial contracting, agribusiness and food processing, hospital systems, and aerospace and defense. Given the oil and gas exemption and the federal carve-out, a good share of the state's largest employers sit partly outside Chapter 14 — which makes establishing which of your Louisiana populations the chapter reaches the sensible first step, before anything else on this page applies.