my work is infamous for letting the only person who knows how to do something leave, and then going "oh crap". they may be getting a bit smarter though. there's very few of us that do my job, about 90% failure for new people, and about 1/2 of us can retire any time we want. they managed a pretty good raise a couple months ago but it's only going to buy them a year or so for the ones ready to leave.
