U.S. Equal Employment Opportunity Commission
Questions about an applicant's religious affiliation or beliefs (unless the religion is a bona fide occupational qualification (BFOQ)), are generally viewed as non job-related and problematic under federal law.
Religious corporations, associations, educational institutions, or societies are exempt from the federal laws that EEOC enforces when it comes to the employment of individuals based on their particular religion. In other words, an employer whose purpose and character is primarily religious is permitted to lean towards hiring persons of the same religion. This exception relieves religious organizations only from the ban on employment discrimination based on religion. It does not exempt such organizations from employing individuals due to their race, gender, national origin, disability, color, and/or age. Other employers should avoid questions about an applicant's religious affiliation, such as place of worship, days of worship, and religious holidays and should not ask for references from religious leaders, e.g., minister, rabbi, priest, imam, or pastor.