They must evaluate employees and potential employees based on their qualifications, not their gender.
Gender discrimination includes paying women less than men for substantially the same kind of work.
It is also illegal for employers to reduce the wages of either gender in order to comply with the law. In other words, if you are a woman performing the same work as a fellow male employee and he is receiving a higher wage, your employer must raise your wage. Another possible indication of gender discrimination is when your employer pays a different wage to a predecessor or successor employee of the opposite sex. An employer cannot discriminate based on pregnancy, childbirth, or related medical conditions. It is illegal for an employer to refuse to hire a woman because she is pregnant, as long as she is able to perform the major functions of her job.