An exit interview is a conversation or other communication between a voluntarily or involuntarily departing employee and a representative from the employer. The interview can follow a structured format or be conducted on an informal basis; written questionnaires can even be used in place of a face-to-face meeting. Whichever format is used, exit interviews are generally documented. Exit interviews are a good way for the employee to voice complaints, offer constructive criticism, let off steam, air some gripes, or explain why he or she is heading elsewhere. But the real value of the exit interview is most clearly for the employer, who can use it as a reality check, a trend-spotter, and an informal but significant review to see how the company is doing.