(a) "Fringe benefits," as used herein, includes medical, hospital, accident, life insurance and retirement benefits; profit-sharing and bonus plans; leave; and other terms, conditions, and privileges of employment. (b) It shall be an unlawful employment practice for an employer to discriminate between men and women with regard to fringe benefits. (c) Where an employer conditions benefits available to employees and their spouses and families on whether the employee is the "head of the household" or