Federal antidiscrimination laws--Title VII of the Civil Rights Act, the Age Discrimination in Employment Act, the Rehabilitation Act, and the Americans with Disabilities Act--prohibit employment advertisements that express a preference based on race, color, gender, national origin, religion, age, genetic information, or disability. This applies to all sources of advertisement, including the Internet.
Bona fide occupational qualification (BFOQ) exception. An advertisement may express a preference for one of these characteristics if it is a BFOQ reasonably necessary for the operation of the business. This is a very narrow and restricted exception. For example, a manufacturer of men's clothing can lawfully advertise for male models. In general, race or color cannot be a BFOQ.
The Immigration and Nationality Act prohibits employers from discriminating based on citizenship or immigration status, including in advertisements, unless required by law, regulation, or government contract.
Discrimination against the long-term unemployed. Several states have passed legislation banning employers from indicating in advertisements that they will only consider currently employed or recently unemployed ...