In Japan they have a name for this.. karōjisatsu.. It literally means suicide from work. I wrote about this about two years ago below. Our industry (IT) could be worse than others due to the different kind of stress it creates. Here's some work/research I have done on this.

http://itrevolution.com/karojisatsu/

http://itrevolution.com/karojisatsu-in-plain-english-burnout...

We have to band together and do something about this plague...

@botchagalupe