Does Your Company Need a Non-DOT Alcohol Testing Policy?

What is non-DOT alcohol testing?

Non-DOT alcohol testing is any workplace alcohol test that isn't performed under 49 CFR Part 40, meaning it isn't tied to a DOT-regulated safety-sensitive function like commercial driving. Most employers who test aren't moving freight: a manufacturing plant with a reasonable-suspicion policy, a warehouse running pre-employment screening, or a construction contractor requiring post-incident testing are all running non-DOT programs. These programs are governed almost entirely by the employer's own written policy, applicable state law, and any union contract language, rather than by a single federal rule the way DOT testing is. That flexibility is useful, but it also means a non-DOT program has no built-in floor of required procedures unless the employer writes one in.

Why would a company that isn't DOT-regulated test for alcohol at all?

Employers outside DOT's reach test for the same underlying reasons DOT does: an impaired employee operating machinery, driving a non-CDL company vehicle, or working around hazardous processes is a real safety and liability exposure, and a documented testing policy gives supervisors a defensible way to act on reasonable suspicion instead of guessing. General Duty Clause exposure under the OSH Act doesn't require alcohol testing specifically, but an employer that knew about an intoxication pattern and did nothing can face that exposure separately from any testing question. Workers' compensation programs in many states also offer a premium discount for employers with a documented drug and alcohol policy, which is a common reason a non-regulated employer adopts one even without a safety incident driving it.

How does a non-DOT program differ from a DOT program at the same company?

Some employers run both: a trucking company's CDL drivers are tested under Part 40, while its warehouse and office staff are tested under a separate company policy. 49 CFR § 40.13 requires that these two programs stay completely separate in every respect. DOT specimens and breath samples can't be reused or repurposed for non-DOT testing, and a non-DOT form can never substitute for the DOT Alcohol Testing Form on a DOT-covered employee. If both a DOT and a non-DOT test are needed for the same person on the same day, the DOT test has to be completed first, and any leftover specimen material from it gets discarded rather than carried into the non-DOT collection. Mixing the two programs, even informally, can void the DOT test's legal standing.

DOT vs. non-DOT alcohol testing at a glance

Element	DOT testing	Non-DOT testing
Governing rule	49 CFR Part 40	Employer policy, state law, union contract
Who it covers	Safety-sensitive transportation employees	Any employee the employer's policy names
Required form	DOT Alcohol Testing Form (ATF)	Employer-chosen non-DOT form
BAT/STT required	Yes, DOT-qualified technician	Employer's choice, often still a trained technician
0.02-0.04 result	Mandatory duty removal, fixed DOT consequence	Set by the employer's written policy

What should a non-DOT alcohol testing policy actually cover?

Without a federal template to follow, a defensible non-DOT policy has to answer the questions Part 40 answers by default for DOT employers: which employees or positions are covered, which testing circumstances apply (pre-employment, reasonable suspicion, post-incident, random, return-to-duty), what device and cutoff level are used, who is qualified to conduct the test and interpret the result, and what consequence follows a confirmed positive. A policy that's silent on any of these tends to fall apart under challenge, usually at the exact moment it's needed most: right after a positive result when the employee or their attorney asks what authorized the test and what the written consequence was supposed to be. State law can also restrict non-DOT testing, including rules on who can require it and how results can be used, so a policy should be checked against the state the employee actually works in, not just copied from a DOT template with the word "DOT" removed.

How Foster handles this

Foster trains and certifies breath alcohol technicians for both DOT-regulated and non-DOT employers, and the training itself doesn't change: the same device operation, calibration verification, and documentation habits that keep a DOT test defensible are exactly what makes a non-DOT result defensible if it's ever challenged. For a company building its first non-DOT policy, Foster's BAT training program and breath instrument calibration service keep the testing side of the program solid even though the policy itself is the employer's own document, not a government form. Employers running both DOT and non-DOT programs should also see our post on the DOT breath alcohol testing program for how the DOT side is structured, since keeping the two programs visibly separate is the part most likely to go wrong. Request a quote to get technician training started.

Frequently asked questions

Does a non-DOT employer have to follow 49 CFR Part 40?

No. Part 40 only governs DOT-regulated safety-sensitive testing. A non-DOT employer sets its own procedures through a written policy, subject to applicable state law and any collective bargaining agreement.

Can the same breath alcohol technician run both DOT and non-DOT tests?

Yes, as long as the two tests are kept procedurally separate: separate forms, separate specimens where applicable, and the DOT test completed first if both are needed for the same employee on the same day.

Can a non-DOT employer use a lower or different alcohol cutoff than DOT's 0.02 and 0.04?

Yes. Since non-DOT testing isn't governed by Part 40, the employer's written policy sets the cutoff and the consequence, as long as it's applied consistently and doesn't conflict with state law.

What happens if a non-DOT policy doesn't specify who can conduct the test?

The result becomes harder to defend. Without a named qualification standard in the policy, a challenged result can turn into a dispute over whether the person who administered it was competent to do so, which a clear policy avoids by naming the required training or certification up front.

Sources

• 49 CFR § 40.13, Does this part apply to the non-DOT testing I conduct? (Cornell LII)
• 49 CFR Part 40, Subpart B, Employer responsibilities (Cornell LII)