I am an unloader and work the predawn 4am shift. On tough days which may consist of many irregs and 53 foot feeders I can unload 2 trucks and then would finish off the 1st and 2nd day air feeders. Sometimes my SUP then sends me to a boxline where I would stay till almost 9 o' clock. I haven’t requested additional work time I simply would like to unload and get out of there. My SUP and I are far from friends, we have had several run-ins with each other, and on numerous occasions he has tried to make my job hell. Does he send me to the box lines as a punishment or is it simply the possibility they need extra help?