I can't answer your question, I'm afraid. I think it depends on the individual award/work place agreement that applies. I do know that it's something built in to ours that we have to be able to return to the same job we left, and (the school tells me) that I can elect to come back part time and they have to make it possible for me to do so. I have to admit, that teachers in independent schools in NSW really do have a good deal when it comes to maternity leave and returning to work. Check into your conditions of employment and see what you find.

BW