Delta-8 and THCA Are Now Federally Banned: What 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.

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.

Public Law 119-37 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.

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 maritime fleets — 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. MROs cannot accept over-the-counter hemp or CBD claims as a valid medical explanation.

Employers should immediately update their drug testing policy language to explicitly cover total THC in all its forms — not just marijuana or Delta-9 THC.