Is this something I can go to HR about?
I work for an office at my university while I am I full time student. Well I was in lecture today and my boss call for a mandatory meeting an hour beforehand. This was the shortest notice there has ever been. Well I show up annoyed that I have to come in on a day off, the first thing that happens is I get criticised for my dress wear (sweat pants) I explained it was my day off and that this meeting wasn't announced until about an hour ago when I had already been on campus since 8 this morning (the meeting was at 12:30 boss announced the meeting at 11:30) well my.boss writes me up and I refuse to sign the paper stating that there is no dress code I have to adhere to when I'm off the clock. She then writes me up again for being insubordinate. At this point I am very ready to go to HR. Do I have a reasonable arguement to go to HR? What else can I do? I know for a fact I wasn't wrong