29 C.F.R. § 1620.23 Collective bargaining agreements not a defense.
Title 29 - Labor
The establishment by collective bargaining or inclusion in a collective bargaining agreement of unequal rates of pay does not constitute a defense available to either an employer or to a labor organization. Any and all provisions in a collective bargaining agreement which provide unequal rates of pay in conflict with the requirements of the EPA are null and void and of no effect.
Title 29: Labor
PART 1620—THE EQUAL PAY ACT
§ 1620.23 Collective bargaining agreements not a defense.