Maryland law prohibits public and private employers with 15 or more employees, employment agencies, or labor organizations from printing or publishing (or causing to be printed or published) a notice or advertisement relating to employment that indicates any preference, limitation, specification, or discrimination based on race, color, religion, sex, age, national origin, marital status, sexual orientation, gender identity (effective October 1, 2014), or physical or mental disability (MD State Govt. Code Sec. 20-606(e)).
This prohibition does not apply if religion, sex, national origin, marital status, disability, or age is a bona fide occupational qualification for employment.
Also under the law, employment agencies cannot circulate information that unlawfully limits employment, and newspapers cannot publish job advertisements that are discriminatory.