29 U.S.C. § 653

(a) This chapter shall apply with respect to employment performed in a workplace in a State, the District of Columbia, the Commonwealth of Puerto Rico, the Virgin Islands, American Samoa, Guam, the Trust Territory of the Pacific Islands, Wake Island, Outer Continental Shelf lands defined in the Outer Continental Shelf Lands Act [ 43 U.S.C. 1331 et seq.], Johnston Island, and the Canal Zone. The Secretary of the Interior shall, by regulation, provide for judicial enforcement of this chapter by the courts established for areas in which there are no United States district courts having jurisdiction. (b) (1) Nothing in this chapter shall apply to working conditions of employees with respect to which other Federal agencies, and State agencies acting under section 2021 of title 42 , exercise statutory authority to prescribe or enforce standards or regulations affecting occupational safety or health. (2) The safety and health standards promulgated under the Act of June 30, 1936 , commonly known as the Walsh-Healey Act, 1 1 See References in Text note below. the Service Contract Act of 1965, 1 Public Law 91–54 , Act of August 9, 1969 , Public Law 85–742 , Act of August 23, 1958 , and the National Foundation on Arts and Humanities Act [ 20 U.S.C. 951 et seq.] are superseded on the effective date of corresponding standards, promulgated under this chapter, which are determined by the Secretary to be more effective. Standards issued under the laws listed in this paragraph and in effect on or after the effective date of this chapter shall be deemed to be occupational safety and health standards issued under this chapter, as well as under such other Acts. (3) The Secretary shall, within three years after the effective date of this chapter, report to the Congress his recommendations for legislation to avoid unnecessary duplication and to achieve coordination between this chapter and other Federal laws. (4) Nothing in this chapter shall be construed to supersede or in any manner affect any workmen’s compensation law or to enlarge or diminish or affect in any other manner the common law or statutory rights, duties, or liabilities of employers and employees under any law with respect to injuries, diseases, or death of employees arising out of, or in the course of, employment.