Do you have children?" sounds like a harmless enough question. But if you ask it when you're interviewing a job applicant, you may face a discrimination suit.
Companies can avoid charges of unfair practices by standardizing interview procedures and informing interviewers what they can and cannot ask. The Equal Employment Opportunity Commission has published uniform guidelines on employee selection procedures and a free copy is available by writing EEOC, Public Affairs Department, 2401 East St. NW, Washington, DC 20506.