Going back to work isn’t the end of the process. Every employee who returns to safety-sensitive duty after a violation has a follow-up testing plan set by their SAP.
The minimum rules
- At least six unannounced tests in the first 12 months back on duty
- The plan can last up to five years
- Your SAP decides the number and length, and can end the plan after the first year
- Follow-up drug tests are directly observed
- FRA employees: the same part 40 minimum applies (49 CFR 219.104); your SAP decides whether you are tested for drugs, alcohol or both
Need a DOT SAP evaluation?
Talk with a DOT-qualified SAP by secure live video in New York, New Jersey, Georgia and Massachusetts. Appointments are generally available within 24–48 hours once payment and required paperwork are complete, subject to availability.
Who runs the plan
Your SAP sets the plan and sends it to your employer. Your employer schedules the tests. You won’t get a copy of the plan, because the tests must stay unannounced.
If you change jobs
The plan goes with you. A new DOT-regulated employer must continue it until it’s complete, which is why employers ask about prior violations before hiring.
Follow-up vs. random testing
Follow-up tests are in addition to your employer’s random testing program. You can be selected for both.
What if a follow-up test is positive?
A positive or refused follow-up test is a new violation. You’re removed from duty again and start a new SAP process.
Frequently asked questions
Can I ask how many tests I have left?
The plan is kept from employees so the tests stay unannounced. Your employer tracks it.
Who pays for follow-up tests?
DOT doesn’t assign payment. It depends on your employer’s policy or agreements.
Can follow-up testing include alcohol?
Yes. Your SAP may require drug tests, alcohol tests or both.
Start the process that gets you back to work.
Your first inquiry is free. Virtual DOT SAP evaluations throughout New York State, plus New Jersey, Georgia and Massachusetts. Appointments are generally available within 24–48 hours once payment and required paperwork are complete, subject to availability.

