Hey Roque
You might want to take a look at article 26, page 104 of the contract. Lines 10-14. I dont think its so much about how much time is in between, its just that they cant be back to back. And also, if both part-time shifts end within 8hrs, and could be covered by a full time shift, then it should be a full-time shift according to that article. So it would really depend on how long the shifts are for, to know how long they would have to seperate them. But they would have to put enough time in between them to be longer than 8 hrs so a full time shift couldnt cover it. If a full time shift could cover that time, than file a grievance. Dont know if that explained it. Sorry if I confused you more.