I’m a pt package handler. I’ve been having issues with my pt sup that have caused me to go from being the last one there every night to being sent home 3 hours into the shift basically because she doesn’t like me. Everyday she sends me to unload and then home even though I’m a assigned to loading. There are other people on my belt that have less seniority than me (I’ll hit a year in March) that stay longer than me. Is there a seniority rule? Is there anything I can do about this sup?