33 C.F.R. § 141.15

Restrictions on employment

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(a) Each employer of personnel on any unit engaged in OCS activities that is subject to this part must employ, as members of the regular complement of the unit, only citizens of the United States or resident aliens except as provided by § 141.20.

(b) As used in paragraph (a) of this section, “regular complement of a unit” means those personnel necessary for the routine functioning of the unit, including marine officers and crew; industrial personnel on the unit, such as toolpushers, drillers, roustabouts, floor hands, crane operators, derrickmen, mechanics, motormen, and general maintenance personnel; and support personnel on the unit, such as cooks, stewards and radio operators. The term does not include specialists, professionals, or other technically trained personnel called in to handle emergencies or other temporary operations; extra personnel on a unit for training; and other personnel temporarily on a unit for specialized operations, such as construction, alteration, well logging, or unusual repairs or emergencies.

(c)(1) The Officer in Charge, Marine Inspection, may determine whether a particular individual or position is part of the regular complement of a unit. A copy of the determination is provided to the owner or operator of the unit affected.

(2) Determinations in paragraph (c)(1) of this section for all MODUs and fixed and floating OCS facilities, as those terms are defined in 33 CFR 140.10, operating within the USCG Heartland District Outer Continental Shelf Marine Inspection Zone will be made by the USCG Heartland District Outer Continental Shelf Officer in Charge, Marine Inspection, as defined and described in § 3.40-5 of this chapter.

(Approved by the Office of Management and Budget under OMB control number 2130-0182) [CGD 78-160, 47 FR 9379, Mar. 4, 1982, as amended by USCG-1998-3799, 63 FR 35530, June 30, 1998; USCG-2013-0491, 80 FR 20163, Apr. 15, 2015; USCG-2025-0716, 90 FR 47586, Oct. 2, 2025]
Notes of Decisions
Cited in 4 cases, 1991–2011 · leading case: Brown v. Offshore Specialty Fabricators, Inc., 663 F.3d 759 (5th Cir. 2011).
Brown v. Offshore Specialty Fabricators, Inc., 663 F.3d 759 (5th Cir. 2011). “§ 1356 (c)(1)(B); 33 C.F.R. §§ 141.15 ,141.20. The plaintiffs offer no evidence to contest the validity of *767 these exemptions.”
United Ass'n of Journeymen & Apprentices of the Plumbing & Pipefitting Indus. v. Thornburgh, 768 F. Supp. 375 (D.D.C. 1991). “The Coast Guard regulations also provide for exceptions to the employment restrictions of 33 C.F.R. § 141.15 (a) which are substantially the same as the exceptions to the manning or crewing requirement found in 43 U.”
United Ass'n of Journeymen v. Reno, 73 F.3d 1134 (D.C. Cir. 1996). · cites it 2× “As used in § 1356(a)(3), “manned or crewed” refers — according to the Coast Guard’s regulations ( 33 C.F.R. § 141.15 (a)) — to the “regular complement of the unit.”
United Ass'n of Journeymen & Apprentices of the Plumbing & Pipe Fitting Indus. of the United States & Canada, Local Union No. 412 v. Barr, 981 F.2d 1269 (D.C. Cir. 1992). “The district court never reached this issue because it found § 1356 inapplicable: Coast Guard regulations say that manning and crewing refers to the regular complement of a unit ( 33 C.F.R. § 141.15 (a) & (b)); in the court's words, “temporary construction workers are not…”
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