I'm From Victoria, Australia. How Much Notice Does A Casual Employee Need To Give Before Quitting If No Contract Has Been Signed? (working In The Hospitality Industry).

I think considering he does not have a contract, then one week should be sufficient. That does of course assume he will get paid, if he clears this with his boss first, one week should be enough. I think he has to think of it as though he would want at least some notice himself.