I'm a part time TCD, i work preload normally and we have been going in at 245 am and working until about 9am. Wednesday my driving supervisor sent me a text saying I was driving Friday. Had not heard from him until this morning (Friday) at 810am, (drivers report at 9)he sent me a text saying not to come in. I sent a text back asking if someone was going to input my 8hr guarantee and he is claiming that not only am I not guaranteed 8 hrs because Im a part timer, but TCDs in general are not guaranteed 8hrs. I know this is complete BS ,pg 214 (c) states any part time tcd who reports and performs drivers work is guaranteed 8 hrs. The only reason I did not "report" is because he told me not to. Now I am screwed out of at least 8 hrs at triple my TCD rate, or over 6 hrs triple my preload rate, and he is trying to tell me i am only guaranteed 3.5 hrs today and i can come in tonight at 730 and work 3.5 hrs.