Although there is no set rule, a typical interview is scheduled for about one half-hour and there will be several phases in that interview. The first is should I expect an icebreaker, a few minutes of pleasant chit-chat just so that you and the interviewer will feel comfortable with each other. Then the interviewer will get into some substantive questions, behavioral questions, questions about your background, and that will take 15, 20 to 25 minutes. Almost always the employer will leave 5 or 10 minutes for you to ask questions of the employer. That's a very important part of the interview and you should be prepared for it. And then there'll be a close. The interviewer will thank you for coming in. And you'll have the opportunity to tell the interviewer what a pleasure it was to be there and how much you want the job. Usually, you'll have to interview a second time, perhaps even a third time before getting a job offer.