49 CFR § 655.47 - Follow-up testing after returning to duty.
§ 655.47 Follow-up testing after returning to duty.
An covered employer shall conduct follow-up testing of each employee who returns to duty, as specified in 49 CFR Part 40, subpart O.
[66 FR 42002, Aug. 9, 2001, as amended at 88 FR 27653, May 2, 2023]