Bereavement for close family death

Fortunately I am not in this situation right now. But I wanted to ask to get some idea - in the case of the death of a close family member like a parent or a spouse, my assumption is that you would just go on leave for a certain amount of time as you process the grief. How does that all work? What amount of time off is seen as excessive, acceptable or whatnot?

GTA public board.