I don't know where you guys are getting this nonsense from and quite frankly is a dangerous precedent.
You are either, employed, full time, part time, casual, paid leave, unpaid leave, resigned, terminated, voluntary redundant, compulsory redundant.
Stand down provisions are legal in Australia, but not indefinitely, it will be called out and that will be when job keeper ends. Then you'll need to be, back at work, on leave, LWOP, resigned or redundant.