I started in December of 2014 as a loader, getting paid at 10.35 an hour. Got a raise when I went to the sort isle and now I get paid 11.35.. That is the only raise I have gotten so far. A friend of mine, got hired on the same day, loaded just as long as me and is still employed with ups. He too went to the sort isle and got a dollar raise. The only problem is that he got a .70¢ raise after working 70 days and I didn't. I know it wasn't performance based. It's definitely not seniority based as we both started on the same day. I don't understand what happened. Is this something I should bring up to HR or am I wasting my time. Thanks for your replies.