Do Temp Jobs Drug Test? What to Expect

It's one of the most common questions people ask before signing on with a staffing agency: will a temp job make me take a drug test? The honest answer is the frustrating one — sometimes. Whether you'll be tested depends less on the fact that it's temp work and more on who you'll actually be working for, what the job involves, and which state you're in.

Here's how to tell which situation you're in, and what to expect — including the question almost everyone is really asking, about marijuana.

The short answer

Many temp and staffing-agency jobs do require a pre-employment drug test, but plenty don't. There's no universal rule, because the staffing agency usually isn't the one setting the policy — the client company you'll be placed with is. The agency typically runs the test on that employer's behalf, to the employer's specifications.

So the better question isn't "do temp agencies drug test?" It's "does this placement, at this company, in this industry, require one?"

What it actually depends on

Four factors decide it:

• The client employer. A staffing agency places you with a company, and that company's hiring rules apply. Two assignments through the same agency can have completely different testing requirements.
• The industry. Safety-sensitive and regulated fields almost always test — think warehousing and logistics, manufacturing, construction, healthcare, and any role covered by U.S. Department of Transportation rules (commercial drivers, for example). Office, retail, hospitality and many administrative temp roles are far less likely to.
• The specific role. Operating heavy machinery, driving, or handling patients raises the odds of testing. A data-entry or reception placement often carries none.
• Your state. State and local laws increasingly shape what can be tested and when — especially for marijuana (more on that below).

How temp-agency drug testing usually works

When a test is required, it generally comes after you've been offered the assignment, not before — the offer is contingent on a clean result. The agency coordinates it, and the most common format is a 5-panel urine test (screening for substances like THC, cocaine, opioids, amphetamines and PCP); some employers use a quick mouth-swab test instead. As staffing firm Adecco notes, results have to come back before background screening wraps up, which can add a day or two to your start date.

The practical takeaway: if you're asked to "go to a clinic" after a recruiter offers you a role, that's the drug screen.

What about marijuana?

This is the part most people are searching for, so let's be direct.

Marijuana is still the most frequently detected substance in workplace drug tests. In its 2025 Drug Testing Index — an analysis of more than 8 million tests — Quest Diagnostics found marijuana led all positives in 2024, even as overall workplace positivity dipped slightly to 4.4%. In other words, plenty of employers are still testing for THC, and people are still testing positive.

But the picture is shifting and depends heavily on where you live. As more states legalize recreational and medical cannabis, a growing number of employers — particularly for non-safety-sensitive roles — have stopped screening for marijuana in pre-employment tests, and some state and city laws now limit or prohibit it. Staffing-industry guidance increasingly warns agencies against blanket no-hire policies based solely on a marijuana result.

The important caveats: none of that applies to safety-sensitive and federally regulated jobs. DOT-covered roles still prohibit marijuana regardless of state law, and many warehouse, manufacturing and healthcare placements still test. So the only safe assumption is that you don't know until you ask.

What happens if you fail or refuse

A failed pre-employment test usually means the offer is withdrawn, and refusing to take a required test is generally treated the same as failing it. Some employers offer a retest or a second chance, but you can't count on it. Policies vary by company and state, and a positive result for a substance you have a valid prescription for can sometimes be cleared with a medical review officer.

How to handle it as a job seeker

The simplest move is the direct one: ask the recruiter early whether the assignment requires a drug screen and what it covers. A good staffing agency will tell you straight, and asking doesn't count against you. Know your state's rules on marijuana, be honest about any prescriptions that could trigger a positive, and don't try to game a test — getting caught is far worse than a withdrawn offer.

And don't let the possibility scare you off temp work entirely. A large share of temp and administrative placements involve no testing at all, and for the ones that do, knowing what to expect takes most of the stress out of it.

Ready to look? You can browse current temp and full-time openings on JobSnag across warehousing, administrative, healthcare and other fields.

Sources: Quest Diagnostics, Drug Testing Index™ (2025); U.S. Department of Transportation drug- and alcohol-testing rules for safety-sensitive employees; staffing-agency guidance from Adecco and industry sources on pre-employment screening.