"If I understand correctly, the reason for new (expanded?) occupation codes is to enable a taxpayer's occupation to be more correctly categorised. Well, I find I am spending at least 5 minutes trying to find a suitable code for many clients, without any success. I cannot find a direct equivalent for many clients, for example, labourer (non digging!!!), Council Worker, Factory Hand, Process Worker (in aluminium or steel smelter) etc etc. So much for being able to correctly tell the ATO what people do. I think I will be using Occupation not listed 999000 a lot more."