Doing an “autopsy” requires taking time after an employee is fired or quits to figure out what went wrong and how you could have prevented it. Hiring quality employees is one of the best things you can do for your company, so it’s crucial to understand why some employees didn't work out.
Employees usually leave for one of two reasons. The first is that you made a bad hire. The second is that you made a good hire but the person left anyway. Maybe the employee decided to change careers, move away from the area, or just didn’t fit in. There was no way you could have predicted it.
There is little you can do about the second reason, but what you learn from analyzing the reasons for a bad hire is important. You usually can determine what went wrong in the hiring process and then work to make sure it doesn’t happen again.