29 C.F.R. § 1926.28 : Labor — REGULATIONS RELATING TO LABOR — OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR — SAFETY AND HEALTH REGULATIONS FOR CONSTRUCTION — GENERAL SAFETY AND HEALTH PROVISIONS — Personal protective equipment

(a) The employer is responsible for requiring the wearing of appropriate personal protective equipment in all operations where there is an exposure to hazardous conditions or where this part indicates the need for using such equipment to reduce the hazards to the employees.
(b) Regulations governing the use, selection, and maintenance of personal protective and lifesaving equipment are described under subpart E of this part.

29 C.F.R. §1926.28