Okla. Stat. tit. 40, § 40-198.1: Payment of discriminatory wages based on employee's sex

prohibited.

It shall be unlawful for any employer within the State of

Oklahoma to willfully pay wages to women employees at a rate less

than the rate at which he pays any employee of the opposite sex for

comparable work on jobs which have comparable requirements relating

to skill, effort and responsibility, except where such payment is

made pursuant to a seniority system; a merit system; a system which

measures earnings by quantity or quality of production; or a

differential based on any factor other than sex.