---
kind: "section"
citation: "46 C.F.R. § 16.203"
title: "46"
number: "16.203"
heading: "Employer, MRO, and SAP responsibilities."
url: "https://uscodex.org/cfr/46/16.203"
---

# §16.203. Employer, MRO, and SAP responsibilities.

- (a) **Employers.**
  - (1) Employers must ensure that they and their crewmembers meet the requirements of this part.
  - (2) Employers are responsible for all the actions of their officials, representatives, and agents in carrying out the requirements of this part.
  - (3) All agreements and arrangements, written or unwritten, between and among employers and service agents concerning the implementation of DOT drug testing requirements are deemed, as a matter of law, to require compliance with all applicable provisions of this part and DOT agency drug testing regulations. Compliance with these provisions is a material term of all such agreements and arrangements.
- (b) **Medical Review Officer (MRO).**
  - (1) Individuals performing MRO functions must meet the training requirements and follow the procedures in [49 CFR part 40](/cfr/49/part40.md).
  - (2) MROs may report chemical drug test results to the Coast Guard for unemployed, self-employed, or individual mariners.
- (c) **Substance Abuse Professional (SAP).** Individuals performing SAP functions must meet the training requirements and follow the procedures in [49 CFR part 40](/cfr/49/part40.md).

## Notes

### Amendments

[USCG-2000-7759, 66 FR 42968, Aug. 16, 2001]

### Source

Source: CGD 86-067, 53 FR 47079, Nov. 21, 1988, as amended by USCG-2021-0097, 89 FR 93134, Nov. 25, 2024, unless otherwise noted.

### Authority

Authority: 46 U.S.C. 2103, 3306, 7101, 7301, and 7701; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: CGD 86-067, 53 FR 47079, Nov. 21, 1988, unless otherwise noted.

### Amendments

[USCG-2000-7759, 66 FR 42968, Aug. 16, 2001]