DOT-COMPLIANT · ON-SITE EMPLOYER DRUG TESTING
Montana On-Site Employer Drug Testing
Oil refining · Railroad / BNSF · Defense contracting (Malmstrom AFB) · Mining / MSHA · Agriculture · Construction · Healthcare — collectors travel to your Montana worksite
Montana employers in refining, rail, defense, mining, agriculture, construction, and healthcare need worksite drug testing that matches federal DOT, FRA, PHMSA, MSHA, FAA, and contractor requirements — without sending crews to a clinic. OnSite Employer Testing dispatches collectors across Yellowstone, Missoula, Cascade, Gallatin, Silver Bow, Lewis and Clark, Flathead, Hill, Dawson, and Custer counties when routing and availability allow.
Recreational cannabis has been legal in Montana since January 1, 2022, but Montana Code Annotated Section 16-12-108 preserves employer rights to maintain drug-free workplace policies. Federally regulated employers remain fully under 49 CFR Part 40 and related agency rules. Review how it works, get a quote, or browse city pages below.
Montana cities we publish for employer collections
Select a city page for local industries, regulatory notes, and FAQs:
Billings, MT — Yellowstone County (Refinery Hub / Rail Division / Regional Distribution)
Missoula, MT — Missoula County (University / Healthcare / Rail / Construction)
Great Falls, MT — Cascade County (Defense / BNSF Hi-Line / Agriculture / Healthcare)
Bozeman, MT — Gallatin County (Fastest-Growing City / Tech / Construction / Aerospace)
Butte, MT — Silver Bow County (Mining / MSHA / Environmental Contracting / Rail)
Helena, MT — Lewis and Clark County (State Capital / Government Contracting / Healthcare / Construction)
Kalispell, MT — Flathead County (Construction Boom / Healthcare / Tourism / Flathead Valley)
Havre, MT — Hill County (BNSF Hi-Line Division Point / Agriculture / Oil Exploration)
Glendive, MT — Dawson County (Bakken Oil Spillover / BNSF Rail / Agriculture)
Miles City, MT — Custer County (Agriculture / BNSF / Oilfield Services / Ranching Economy)
On-Site Collections Across Montana
Tell us your city, county, program type, and timing. We confirm dispatch feasibility before you commit internal deadlines.
Use our instant quote calculator or visit service areas for coverage context.
Questions from employers in this region
Can Montana employers still enforce a zero-tolerance cannabis policy?
Yes. Montana Code Ann. Section 16-12-108 preserves employer rights to prohibit cannabis, maintain drug-free workplace policies, and take action on positive tests. Federally regulated employers (DOT, FRA, PHMSA, FAA, and many contractors) must follow federal rules regardless of state cannabis law.
Do you come to remote Montana worksites?
We dispatch collectors across the counties listed on this hub when routing and collector availability allow. Share your worksite address and timing at booking so we can confirm feasibility for remote refining, rail, mine, ranch, or defense contractor sites.
Which Montana cities have dedicated location pages?
Billings, Missoula, Great Falls, Bozeman, Butte, Helena, Kalispell, Havre, Glendive, and Miles City each have a dedicated /locations page with local industry and compliance detail.
Core programs: Mobile & on-site drug testing, DOT drug testing, Non-DOT drug testing, Post-accident testing, Reasonable suspicion testing, Random testing programs, Breath alcohol testing. Planning: how it works, instant quote calculator, all locations. Industries: employer industries we support. Long-form answers: Employer drug testing FAQ. Quick questions: Contact us.
For how we think about regions and feasibility, see service areas.
Nationally coordinated collection support
OnSite Employer Testing is headquartered in Illinois and coordinates mobile and on-site employer testing across selected regions and employer locations—including through partner collectors when your program, timing, and geography allow. Availability depends on location, timing, test type, site access, collector availability, and scheduling needs.
Get On-Site Drug Testing Across Montana
Refineries, rail yards, defense contractors, mines, ranches, and construction sites statewide — call (219) 315-0345 or use the quote calculator.