We did just that.... (Score 1)

I worked at a place that was exactly as you describe. We were the engineering dept. and the upper management made commitments to customers that we had to keep. I personally was working 70+ hours a week for months with one 93 hour week. We had to fill out time cards so everyone was aware of the workload. We asked for but were given NO compensation (time off or money). It went from one project to the next until the entire department was pressed to work those hours. We had a meeting and discussed our options. We shot our resume's out to the headhunters and some of us waited for those that had to have a job to find one. It didn't take long. We then left, all 10 of us. They still haven't recovered.