Work as directed.
Beat UPS using their methods, is not that hard.
"Either I get home by midnight if so then nice 5 hours OT and tomorrow my body will even work slower due to the lack of rest or I get home by 6pm if so then nice, I get some quality time after work"
Worked for me just fine, one day Ill work 14 hours then next day my productivity will drop by at least 40% due to lack of proper rest