I'm a part time package handler in Worcester, MA. I work the pre-load, which compared to every other shift in my building, seems to have the absolute worst, and disrespectful supervisors. I constantly have issues when it comes to getting paid for days I book off, or even optional days I have been approved for. Most recently, I took the Thursday and Friday before my vacation week off. I'm sure that pissed them off and maybe they are retaliating. According to my stub, I have 8 hours OPD and 8 hours PST. I was approved for the Thursday as an optional day, but denied the Friday. I already had a flight booked to leave on Wednesday, after my shift, so I booked off for Friday. Our pay period is Mon-Sat since we started running Saturdays, though I am a Mon-Fri employee. I occasionally work Saturdays when asked. I called Saturday morning before the end of the shift and no one answered so I left a message reminding them to put in my 4 hours optional and 4 hours sick so that my pay wouldn't be short. Since no one had answered, I also texted another supervisor who confirmed he was still in the building at the time, and I asked him to relay my request to the the man in charge, AND let him know I had left the message. He replied that he would do so. Low and behold, I only got paid for 12 hours that week, the mon, tue, wed that I worked. No optional time for Thursday, and no sick time for Friday. Then we get in arguments about me booking off and they tell me things like, "You've missed too many days. We're gonna suspend you." I say I looked at my pay stub on UPSERS and I have available sick time. They say you've already missed this many days. I say well maybe if you actually put my sick time in when I booked off I could see I have no time available and would be far less likely to book off unless absolutely necessary. Arguments get heated, the steward just says cool it. Nothing comes of it. I've been here 4 years now, and never got a union book. I don't know any of the rules. I've never filed a grievance, and I'm sure these supervisors are constantly breaking the rules I don't even know. Can I grieve for this type of thing?