I currently work in manufacturing management and I work typically 45 to 50 hours per week average, I am salary/exempt so I don't receive O.T. pay. These hours do fluctuate depending on production demands, though that usually means working more hours not less. When I worked in Automotive (Chrysler) as a manager last year, I typically worked 70 hours or more on average. We were retooling the factory for the new Dodge Caliber, Jeep Compass and Patriot and I was responsible for starting up the new instrument panel assembly line. It was a tough time and I could not sustain those kind of hours which is why I'm no longer there and I'm much happier now, when I used to work hourly as a machinist I welcomed as much overtime as I could, the extra money was welcome, but once you cross the threashold over to salary, overtime is hated.