It shall be an unlawful employment practice for an employer, labor organization, or employment agency to print or publish or cause to be printed or published any notice or advertisement relating to employment by such an employer or membership in or any classification or referral for employment by such a labor organization, or relating to any classification or referral for employment by such an employment agency, indicating any preference, limitation, specification, or discrimination based on race, color, religion, sex, disability, marital status, or national origin, except that such a notice or advertisement may indicate a preference, limitation, specification or discrimination based on religion, sex, disability, marital status, or national origin when religion, sex, disability, marital status, or national origin is a bona fide occupational qualification for employment.