Already requested & approved for a day off tomorrow... Missed a couple of days last week , now work is backed up , time sensitive material needs to get done asap... Supervisor already fed up with me and my excuses... Day off tomorrow because there's an appointment that I need to attended. Made this appointment over 6 months ago... Thinking about going into the office just for a couple of hours to take care of some things, but afaird if I do that , then the Supervisor Won't let me leave for my appointment... Should I go to work and take my chances.. Or... Have the day off and get busted on Tuesday because Time Sensitive material isn't complted...

If you want to keep your job, then I suggest that you go to work. Can you just leave for the appointment? Talk to your boss and see what they say.

You are already approved, it is your bosses job to figure out how to get the work out, or go in after your appointment.

Sadly I will say that far too often people who try to do the best thing and go that extra mile are not given credit for it.