The Pregnancy Discrimination Act, PDA of 1978 was an amendment to Title VII of the Civil Rights Act of 1964 to prohibit sex discrimination on the basis of pregnancy.

Pregnancy discrimination involves treating a woman (an applicant or employee) unfavorably because of pregnancy, childbirth, or a medical condition related to pregnancy or childbirth. The Pregnancy Discrimination Act (PDA) forbids discrimination based on pregnancy when it comes to any aspect of employment, including hiring, firing, pay, job assignments, promotions, layoff, training, fringe benefits, such as leave and health insurance, and any other term or condition of employment.