Oklahoma’s 2026 amendments require employers to enforce zero‑tolerance drug and alcohol standards for all workers in safety‑sensitive positions, now defined strictly by listed job duties rather than employer judgment. Core protections for licensed medical‑marijuana patients remain, but employers may act on use or positive tests only under specific statutory exceptions. The law preserves employer rights to ban on‑duty use and maintain compliant testing policies. Employers must update job descriptions, policies, and training before November 1, 2026.

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