; and (II) upon the employer succeeding under subclause (I), the employee fails to demonstrate that the differential produced by the reliance of the employer on such factor is itself the result of discrimination on the basis of sex, race, or national origin by the employer. (C) The Equal Employment Opportunity Commission shall issue guidelines specifying criteria for determining whether a job is dominated by employees of a particular sex, race, or national origin for purposes of subparagraph (B)(iv). Such guidelines shall not include a list of such jobs. (D) An employer who is paying a wage rate differential in violation of subparagraph (A) shall not, in order to comply with the provisions of such subparagraph, reduce the wage rate of any employee. (2) No labor organization or its agents representing employees of an employer having employees subject to any provision of this section shall cause or attempt to cause such an employer to discriminate against an employee in violation of paragraph (1)(A). (3) For purposes of administration and enforcement of this subsection, any amounts owing to any employee that have been withheld in violation of paragraph (1)(A) shall be deemed to be unpaid minimum wages or unpaid overtime compensation under this section or section 7. (4) In this subsection: (A) The term labor organization means any organization of any kind, or any agency or employee representation committee or plan, in which employees participate and that exists for the purpose, in whole or in part, of dealing with employers concerning grievances, labor disputes, wages, rates of pay, hours of employment, or conditions of work. (B) The term equivalent jobs means jobs that may be dissimilar, but whose requirements are equivalent, when viewed as a composite of skills, effort, responsibility, and working conditions. . (b) Conforming amendment Section 13(a) ( 29 U.S.C. 213(a) ) is amended in the matter before paragraph (1) by striking section 6(d) and inserting sections 6 (d) and (h) . 4. Prohibited acts Section 15(a) (