I worked in an environment where people around me were putting in upwards of 80 hrs. I was closer to 60 hrs because I had 2+ hrs of commute time each day. Still

I worked in an environment where people around me were putting in upwards of 80 hrs. I was closer to 60 hrs because I had 2+ hrs of commute time each day. Still, I had to put in time at home during crunches. We probably had about five months of 40 hr weeks spread throughout the year between launches, yet many people still went well over even then. It's not universal, but I don't think it's uncommon.