Inappropriate interview questions create a risk of discrimination claims under various state and federal anti-discrimination laws. (For example, Title VII of the Civil Rights Act of 1964, the Age Discrimination in Employment Act, and the Americans with Disabilities Act, as amended by the Americans with Disabilities Amendments Act.) Therefore, when interviewing an applicant for a job, you must avoid questions relating to race, sex, national origin, age, pregnancy, religion and disability, which are irrelevant as to whether he or she is qualified for the job.
Even asking questions that do not appear discriminatory on their face may be considered unlawful when they screen out a disproportionately high percentage of candidates on the basis of protected status and are not justified by any business purpose. For example, asking about whether an applicant owns their own home could be considered racial discrimination.