About 3 weeks ago, I started a part-time job in retail sales, at a higher end clothing and home department store in a mall. I work about 20 hours per week, no benefits (I started at 29 hours per week, but asked for shorter shifts and less hours, as I deal with thyroid fatigue and pain in knees from arthritis--I did not tell them about those issues, just asked for shorter shifts).

Also, the store rule book states that short hour employees are to work no more than 20 hours per week, and they tried to get away with making me work 29.5 hours a week (30 hours would qualify for benefits).

My coworker, C, is a college student in her 20s (I am about 25 years older). She is part time with benefits employee, and is responsible for training me (she is under K, one of the department supervisors). C is quite goofy, which I find annoying. I am focused and serious at work. So I realize personality differences are part of the problem. She acts goofy, going off on tangents about people who rip tags off clothing who need to be slapped and banned from coming in the store, or will just babble nonsensically about off topics.

She gets snippy with me quite often, telling me I put the sales flyers in the binder in the wrong order, or when I was walking behind her and she moved some clothing on hangars to the front of a rack, and I accidentally brushed against the rack, causing the hangars to make a noise, she turned around and accused me of moving the clothing away from the end of the rack, which we are not supposed to do, because the customers might hit their heads on the end of the rack. I did not defend myself, as I thought she was just being crabby (and unreasonable).

She also will not look at me or talk to me when I come in to work my shift and she is already at the counter, even when I say hello to her. She ignores me or talks to herself. When I arrived for work the other day, she was standing at the counter with K (the dept super) and they both stopped talking when I approached, and C would not look at me, and K was rather short with me. I have seen K correcting her, for not scanning into the system, the new coats that she put out on the floor. We are also supposed to take our breaks at the scheduled time (management reminded us of that at a meeting) but C takes her break whenever she feels like it. She takes advantage of store employee discount and made me use an email coupon also when ringing up her order, even though she was not sure if employees were to use it, and told me not to worry, that she would get written up, not me (huh?) Her boyfriend comes to the store and she will visit with him, instead of working (while I continue to work).

She has also arrived 10 minutes late for her shift (causing me to stay an extra 10 minutes). Also, she disappeared from the counter the other day, when I was waiting on customers, and another coworker started working at the counter. One of the supervisors asked me whether C had arrived at work yet, and I said she was just here and then left.

Also, the other day, it was about 15 minutes to close, and my department super told me to check the dressing rooms for clothing to put away. The women's dressing room had over 50 items of clothing, so I had to make 3 trips to the front desk to put the clothing on the rack we use for clothes that need to be put away. There is a sheet in the dressing room hall, that employees are write their initials and time of checking the rooms. C had initialed the sheet about an hour earlier. However, I think she lied and put her initials there, much earlier in the day, to "pretend" that she had checked the rooms. Because we did not have many customers in the last hour and there was no way there would have been that much clothing in the rooms with very few customers.

I don't know if I should document this incidences and report them to upper level management. I am afraid that I will get in trouble, for not working hard enough (like the dressing room incident) because of what C is not doing.