It's one thing when you don't receive a reply from an employer after sending your resume and cover letter, but things get more personal when you don't hear back after a job interview. Waiting for a response is stressful and it's easy to let your mind run wild when coming up with reasons the employer hasn't called. Was it your hair? Should you have answered a certain question differently? Put the kabosh on your what-if thought process; usually an employer hasn't called back due to one of these eight reasons.