Drug Testing Laws in Washington

State law (Washington): The statute reaches initial hiring, and it prohibits two grounds for discrimination: cannabis use off the job and away from the workplace, and the presence of nonpsychoactive cannabis metabolites in hair, blood, urine or other bodily fluids Source 1State legislatureRCW 49.44.240 — cannabis use, hiring, and nonpsychoactive metabolites — checked 18 Aug 2026. It took effect on 1 January 2024 Source 1State legislatureRCW 49.44.240 — cannabis use, hiring, and nonpsychoactive metabolites — checked 18 Aug 2026.

State law (Washington): What an employer may still do is extensive. It may use a scientifically valid drug screening method that does not detect nonpsychoactive metabolites; it may test for other controlled substances; and it may test across the cannabis spectrum while withholding the cannabis results Source 1State legislatureRCW 49.44.240 — cannabis use, hiring, and nonpsychoactive metabolites — checked 18 Aug 2026.

Employer policy: So this is not a ban on pre-employment testing. It is a restriction on what a pre-employment result may be used for. A Washington employer can still run a panel; what it cannot do is decline to hire you in a covered role on the strength of a nonpsychoactive metabolite finding.

State law (Washington): This is where the whole provision lives. Discrimination in initial hiring on either prohibited ground is not permitted for a covered position Source 1State legislatureRCW 49.44.240 — cannabis use, hiring, and nonpsychoactive metabolites — checked 18 Aug 2026.

State law (Washington): The excluded positions, in the statute's own terms: positions requiring a federal government background investigation or security clearance; law enforcement in general authority agencies; fire departments and fire protection districts; first responders and 911 dispatchers; corrections officers; positions in the airline and aerospace industries; and safety-sensitive positions for which impairment while working presents a substantial risk of death Source 1State legislatureRCW 49.44.240 — cannabis use, hiring, and nonpsychoactive metabolites — checked 18 Aug 2026.

Employer policy: Before assuming you are protected, check your role against that list. It is longer than most summaries of this law suggest, and airline and aerospace in particular sweeps in a substantial share of Washington employment.

State law (Washington): Post-accident testing, suspicion-based testing and impairment testing are all permitted Source 1State legislatureRCW 49.44.240 — cannabis use, hiring, and nonpsychoactive metabolites — checked 18 Aug 2026. Because the statute addresses hiring, it places no restriction on testing current employees.

Employer policy: The practical shape of this in Washington: strongest protection at the point of hire, ordinary employer latitude thereafter. If you are already employed, this statute is not the thing that helps you.

State law (Washington): The line the legislature drew is the word nonpsychoactive. It is the presence of nonpsychoactive cannabis metabolites that cannot support a hiring decision in a covered role Source 1State legislatureRCW 49.44.240 — cannabis use, hiring, and nonpsychoactive metabolites — checked 18 Aug 2026 — which is why the statute expressly permits screening methods that do not detect them Source 1State legislatureRCW 49.44.240 — cannabis use, hiring, and nonpsychoactive metabolites — checked 18 Aug 2026.

That distinction puts Washington close to California in principle, though the mechanism differs: California constrains what a covered employer may act on, while Washington constrains the initial hiring decision and enumerates a long list of roles it does not touch Source 1State legislatureRCW 49.44.240 — cannabis use, hiring, and nonpsychoactive metabolites — checked 18 Aug 2026.

State law (Washington): The statute's safety-sensitive carve-out is written narrowly: a safety-sensitive position for which impairment while working presents a substantial risk of death Source 1State legislatureRCW 49.44.240 — cannabis use, hiring, and nonpsychoactive metabolites — checked 18 Aug 2026. Risk of death, not risk of harm or inconvenience.

Employer policy: That wording is worth holding an employer to. A role is not outside the protection simply because a policy document labels it safety-sensitive — the statutory test is the risk that impairment in that role presents. Separately, several categories are excluded by name regardless of that test Source 1State legislatureRCW 49.44.240 — cannabis use, hiring, and nonpsychoactive metabolites — checked 18 Aug 2026.

Federal (DOT): Where federal law or a federal contract imposes requirements, those take precedence over this section, and positions requiring a federal background investigation or security clearance are excluded outright Source 1State legislatureRCW 49.44.240 — cannabis use, hiring, and nonpsychoactive metabolites — checked 18 Aug 2026. A DOT-regulated test is unaffected by anything here.

Employer policy: If you are applying for a role that is both federally regulated and in Washington, the federal rulebook is the one that decides, and this statute will not help you.