Delta-8 and THCA Are Now Federally Banned.

May 17, 2026•3 min read

EMPLOYER ALERT |DRUG TESTING POLICY UPDATE

Delta-8 and THCA Are Now Federally Banned. Here’s What Southeast Texas Employers Need to Know.

If you manage a workforce in Southeast Texas, there’s a federal law change you can’t afford to miss — and the clock is already ticking.

Congress recently passed legislation closing a long-standing loophole in federal hemp rules, effectively banning Delta-8 THC and THCA. For employers across Jefferson, Orange, and Hardin counties — especially those in the petrochemical, transportation, construction, and industrial sectors — this legislation significantly shifts the conversation about workplace drug testing.

Here’s what happened, what it means, and what you should do before the effective date.

What Was the Loophole?

The 2018 Farm Bill defined “hemp” almost entirely by its Delta-9 THC concentration. That narrow definition created an opening that manufacturers quickly exploited. Products containing other intoxicating cannabinoids — such as Delta-8 THC and THCA — were legally sold at gas stations, vape shops, and online retailers because they technically weren’t Delta-9 THC.

The result was predictable: workers could buy and use products marketed as legal hemp, arrive at the job site impaired, and still argue that their use was federally permitted. For employers trying to maintain a drug-free workplace, that was an unworkable situation.

What the New Law Does

Public Law 119-37, enacted in November 2025, shifts the federal measurement standard from Delta-9 concentration alone to “total THC,” thereby eliminating the manufacturing workaround.

Under the new rules, Delta-8 THC is now explicitly classified as a restricted substance. THCA is also banned because it converts to intoxicating Delta-9 THC when heated or smoked — a process known as decarboxylation.

The law also imposes a strict cap on THC in hemp-derived consumer products: no product may contain more than 0.4 milligrams of total THC per container, regardless of container size. In practical terms, the vast majority of full-spectrum CBD products on the market today will be reclassified as Schedule I marijuana under federal law.

When Does This Take Effect?

The restrictions are set to take effect 365 days after the law’s enactment, giving employers a transition window that extends through approximately November 2026. Pending legislation could further extend that timeline, but employers shouldn’t wait to act. Updating your policy before the deadline protects your company and provides employees with fair notice.

What This Means for Drug Testing

The most common question employers ask is whether Delta-8 and THCA appear on a standard drug test. The answer is yes. Because these compounds share chemical structures with Delta-9 THC, standard screening panels often cannot distinguish among them.

For DOT-regulated employers — trucking companies, pipeline operators, and others — there’s no gray area. The DOT has consistently held that any positive THC result stands, regardless of whether an employee claims to have used only a “legal” hemp product.

Even for non-DOT employers, the situation needs clarity. If an employee tests positive and claims they were using a THCA product purchased legally at a local shop, do you have a written policy addressing this? If not, you’re exposed.

What to Do Right Now

Employers should take four steps before the November 2026 effective date.

•Update your drug testing policy. Ensure your prohibited substances language explicitly covers THC in all its forms — not just marijuana or Delta-9 THC.

•Communicate the change to your workforce. Employees who have been using Delta-8 or THCA products, assuming they’re compliant, need written notice of this policy change.

•Train your supervisors. Reasonable suspicion documentation is critical. Supervisors need to recognize impairment and document it accurately.

•Evaluate your return-to-duty procedures and ensure that your retesting and last-chance agreements align with the new federal standard.