The problem, of course, is that departing employees rarely tell the whole story. By the time people decide to leave an organization, they have little incentive to tell their soon-to-be-former employer the truth—that they are leaving because their supervisor didn't really manage them, and without a good manager, their jobs eventually became miserable. What companies should be doing is asking a different question, and far sooner than an exit interview: What is making you even consider leaving in the first place?