(a) It shall be an unlawful employment practice for a contractor to discriminate on the basis of sex with regard to fringe benefits.

(b) As used herein, the term “fringe benefits” includes, but is not limited to, medical, hospital, accident, life insurance, and retirement benefits; profit-sharing and bonus plans; leave; and other terms, conditions, and privileges of employment.

(c) The greater cost of providing a fringe benefit to members of one sex is not a defense to a contractor's failure to provide benefits equally to members of both sexes.