29 C.F.R. § 779.116 Custodial and maintenance employees.
Title 29 - Labor
Custodial and maintenance employees who perform maintenance and custodial work on the machinery, equipment, or premises where goods regularly are produced for commerce or from which goods are regularly shipped in interstate commerce are engaged in covered activities.
Title 29: Labor
PART 779—THE FAIR LABOR STANDARDS ACT AS APPLIED TO RETAILERS OF GOODS OR SERVICES
Subpart B—Employment to Which the Act May Apply: Basic Principles and Individual Coverage
Employees Engaged in Commerce or in the Production of Goods for Commerce
§ 779.116 Custodial and maintenance employees.

