When a SAP evaluation is required under DOT rules
The federal return-to-duty process applies after a DOT drug or alcohol regulation violation involving a DOT-regulated employee. Under 49 CFR 40.285, examples include a verified positive DOT drug test, a DOT alcohol test showing 0.04 or greater, a refusal to test, and certain other violations of DOT agency drug and alcohol prohibitions.
For a driver subject to FMCSA testing rules, a qualifying violation can also affect the driver's Clearinghouse status. A driver who is prohibited from safety-sensitive work generally must complete the applicable DOT return-to-duty process before resuming those duties.
A non-DOT test is a separate workplace matter
DOT expressly requires DOT and non-DOT testing to be kept separate. 49 CFR 40.13 says a non-DOT test is not converted into a DOT test simply because the employer also operates in a regulated industry. DOT also prohibits conducting a DOT test on someone who is not a DOT-regulated employee.
A positive non-DOT test may still have consequences under an employer's policy, collective bargaining agreement, contract, or applicable state law. Those consequences can include an employer-directed assessment or rehabilitation requirement, but that is not automatically the federal Part 40 SAP process.
Check the test before assuming which rules apply
Useful questions include whether you were performing a DOT-regulated safety-sensitive function, which testing authority was shown on the paperwork, why the test was ordered, and whether the employer or medical review officer described the result as a DOT violation.
Do not rely only on the fact that you hold a CDL. DOT publishes a separate summary of employees covered by Part 40. If the matter is an FMCSA violation already recorded in the Clearinghouse, see the guidance on Clearinghouse prohibited status.
Alcohol results need particular care
A DOT alcohol concentration of 0.04 or greater is identified in 40.285 as a DOT drug and alcohol regulation violation requiring the SAP process. A result from 0.02 through 0.039 should not be described as the same SAP-triggering violation. For FMCSA-regulated drivers, separate rules restrict safety-sensitive performance following an alcohol concentration of 0.02 or greater but less than 0.04.
If the paperwork is unclear, determine whether the result was DOT or non-DOT before arranging a SAP evaluation or assuming a Clearinghouse consequence.