When preparing for an interview with a candidate, it’s a good idea to develop a list of standard interview questions that you will use for all candidates. You should be aware of what you should and should not ask, and consider the knowledge, skills, and abilities required for the job you are looking to fill.
In general, laws prohibit the use of pre-employment questions that cannot be shown to be job-related and justified by business necessity. Your focus must be: “What do I need to know to determine whether I should hire this person for this position?”
When thinking through possible interview questions, ask yourself, "Is this information necessary to judge the candidate’s competence and qualification, and is the question job-related?"
The U.S. Equal Opportunity Opportunity Commission enforces federal laws prohibiting employment discrimination. And while your business may be small enough to be considered exempt from federal law, you may be covered under the laws of your particular state. (For more information, visit the EEOC website