You can not ask questions that do not have a direct impact on the employees ability to do the job today, future plans cannot be considered. An employer may not ask about handicaps or physical limitations unless they will interfere with job performance. Any question which attemts to gain information about an employees age is not allowed. There are many other techniques that are better at identifying needed skills while eliminating the bias of the interview. These include telephone, or blinded interviews when interpersonal skills are an important function of the job.
Structured interviews are one of the better ways the traditional interview can be replaced.
A structured interview is often conducted by more than one individual and has a list of predetermined questions. These questions have a list of answers which have preassigned scores the answers given during the interview are rated according to this list. This method when properly conducted can be very valid and reliable. Many experts claim that the best way to select employees is with a realistic job preview. Put the candidate into the work situation and see how things develop.