Honest mistakes and unforeseen circumstances can necessitate death marches. I've been in a few situations where they were "necessary" -- some opportunity arose,

Honest mistakes and unforeseen circumstances can necessitate death marches. I've been in a few situations where they were "necessary" -- some opportunity arose, or something happened that required the march. But it's also an issue of experience and repeating patterns. If death marches are a part of the culture, I'd definitely say get the hell out. From a management perspective, you can heal some of the wounds inflicted by a death march by offering verbal and written mea culpas, and by giving real compensation to the people you forced on the march: extra paid time off, bonuses, significant gifts, etc. And then follow through by never doing it again to your employees.