Generally, paying one employee less than another employee of the opposite sex is unlawful. However, nothing in the law prohibits an employer from providing wage differential pay based on a seniority system, a merit system, or a system that measures earnings by quality or quantity of production.
For questions regarding discrimination, harassment, and hostile work environment, you may contact the Equal Employment Opportunity Commission (EEOC) at (615) 736-5820 or (800) 669-4000 or the Civil Rights Enforcement Division (CRED) at 615-741-5825.