As used in this act:

    (a) "Department" means the state department of labor.

    (b) "Employer" means an individual, partnership, corporation, or other association, or a city, village, township, or county that employs 2 or more persons.

    (c) "State" means this state or an agency, department, division, bureau, board, commission, council, authority, or other body of this state.

     The department shall compile a register of employers who have been found in contempt of court by a federal court of appeals, on not less than 3 occasions involving different violations during the preceding 7 years, for failure to correct an unfair labor practice, as prohibited by section 8 of chapter 372 of the national labor relations act, 29 U.S.C. 158. The register, which shall be compiled and updated biannually from the records of the national labor relations board, shall contain the names of those employers who merited inclusion in the register during the 3-year period before its compilation and shall be available, upon request, to the state.

    (1) The state shall not award a contract or a subcontract to an employer whose name appears in the current register compiled pursuant to section 2.

    (2) After January 1, 1982, an employer who has a contract with this state, in relation to that contract, shall not enter into a contract with a subcontractor, manufacturer, or supplier whose name appears in the register compiled pursuant to section 2.

     The state shall not enter into a contract with an employer unless the contract contains a clause providing that the state may void the contract if the name of the employer, or the name of a subcontractor, manufacturer, or supplier of the employer, subsequently appears in the register compiled pursuant to section 2.