29 C.F.R. § 779.201

The term “enterprise” is defined in section 3(r) of the Act and, wherever used in the Act, is governed by this definition. (§ 779.21(a) provides that portion of the definition of “enterprise” which is pertinent with respect to retail and service enterprises.) The term is a key in determining the applicability of the Act to these businesses. The “enterprise” is the unit for determining whether the conditions of section 3(s)(1) through (5) of the prior Act and section 3(s)(1) through (4) of the amended Act, including, where applicable, the requisite dollar volume are met. The “enterprise” is also the unit for determining which employees not individually covered by the Act are entitled to the minimum wage, overtime, and equal pay benefits, and to the child labor protection, under sections 6, 7, and 12 of the Act. In general, if the “enterprise” comes within any of the categories described in section 3(s)(1) through (5) of the prior Act or section 3(s)(1) through (4) of the amended Act, all employees employed in the “enterprise” are covered by the Act and, regardless of their duties, are entitled to the Act's benefits unless a specific exemption applies.