You won't ever have a steady schedule. The schedule runs Saturday through Sunday and you won't know your schedule until 5pm that Friday. You probably won't get the day off you requested and had approved. If your relief calls out, you stay until somebody shows up or you get fired. In the ATO division, you work with a group of guys that have the wrong attitude all around. You spend 12 hour shifts in a room the size of a bathroom with furniture that's apt to collapse at any moment. And you're expected to be ever grateful to your masters for having the opportunity to work there.