Anyways after the side-track, I'm Part 91, so I have no duty regs to protect me.
I work 8-4:30 M-F. I do work after those hours, and in January I worked 3 of 4 weekends. That isn't what I usually do, maybe one weekend a month if that, but we had a busy sales month and 5 trips to FL and back from IN/OH/MI area for people getting training in their new planes. My longest actual day of work was when I flew a DA40(I hate these for this reason) from MIE to CHD via IND-CPS-TUL-AMA-ELP(1500nm-ish I think). 13.4 hours in the plane, not counting fuel/food stops, but I got it out there and was home by noon the next day, with minimal sleep albiet, but I was home.
My company really tries to keep us in regular hours, but it's a give and take. If we work late or extra, it's no problem to not come in until noon the next day or take another day off etc....