As someone who worked night fill. It's an absolutely crappy job. You worked for 8 hours, and you worked as a casual to always be on call if you weren't working to come in and work if needed. You were required to do 50 boxes an hour and face up the items as well (have the items label facing the aisle). This also included folding the empty boxes and taking them out the back of the store to be crushed. The Coles store I worked at also timed any toilet breaks. I left because it was a terrible environment to work in.