"Give honest feedback" is the one that made me laugh out loud. If you, as an employer, have no idea what made the employee unhappy enough to want to leave, then

"Give honest feedback" is the one that made me laugh out loud. If you, as an employer, have no idea what made the employee unhappy enough to want to leave, then you most likely didn't do your homework. Exceptions exist, of course. For example, maybe you knew beforehand what was wrong but were either unable or unwilling to change it. Not much to do there, either. All in all, "honest feedback" at the end of the relationship is a little too late.