Unlike many other states, Wisconsin does not have a stand-alone equal pay law. Rather, this issue is addressed as part of the Wisconsin Fair Employment Act (WI Stat. Sec. 111.31 et seq.). The Act prohibits compensation discrimination against individuals on the basis of age, race, creed, color, disability, marital status, sex, national origin, ancestry, sexual orientation, arrest record, conviction record, military service, or use or nonuse of lawful products off the employers’ premises during nonworking hours, or declining to attend a meeting or to participate in any communication about religious or political matters.
Employment discrimination “because of sex” includes discriminating against any individual in “compensation paid for equal or substantially similar work” (WI Stat. Sec. 111.36(1)(a)).