My location was swamped sometimes, so that 50 hours was the least amount worked by anyone in the lab. I did 8-8 once with a half hour lunch and plenty of 8-6 or 6:30 in spring and fall rush seasons, including 8-6:45 on my birthday. It was far too much stress with little corporate support. Other times, we could complete our work for the day by 10 but still have to stay or have vacation time docked. Sometimes there was flexibility in loading extra time at the beginning of the work and being able to leave early on Friday.