(a) Any employer and his or her agent, or the officer or agent of any corporation, who discharges or in any other manner discriminates against any employe because such employe has testified or is about to testify before the secretary or his or her representative in any investigation or proceeding under or related to this act, or because such employer believes that said employe may so testify shall, upon conviction thereof in a summary proceeding, be sentenced to pay a fine of not less than five hundred dollars ($500) nor more than one thousand dollars ($1,000), and in default of the payment of such fine and costs, shall be sentenced to imprisonment for not less than ten days nor more than ninety days.

(b) Any employer or the officer or agent of any corporation who pays or agrees to pay any employe less than the rates applicable to such employe under this act shall, upon conviction thereof in a summary proceeding, be sentenced to pay a fine of not less than seventy-five dollars ($75) nor more than three hundred dollars ($300) or to undergo imprisonment of not less than ten nor more than sixty days, or both. Each week in which such employe is paid less than the rate applicable to him or her under this act and for each employe who is paid less than the prescribed rate, a separate offense shall be deemed to occur. Any agreement between the employer and the employe to work for less than the applicable wage rate shall be no defense to action by the Commonwealth under this section.

(c) Any employer or the officer or agent of any corporation who violates any other provision of this act or of any regulation issued thereunder shall, upon conviction thereof in a summary proceeding, be sentenced to pay a fine of not less than one hundred dollars ($100) nor more than five hundred dollars ($500), and each day of such failure to comply with this act or regulation, shall constitute a separate offense.