Ok, so I have worked at this job for the past 2 years now. My tax was fine last year, mind you I was only part time. But for the most part of the last financial year I was full time. I'm the only one who works between me and DF. But on my notice, I had to pay back the ATO. I rang up and tried to get as much info as I could, and all the lady could tell me was it wasn't my fault, and that my taxes weren't all paid. So I got nothing for my return. I want to know, could this be something caused from my boss? He is a shady character and I know he is doing things in his business that isn't particularly allowed, like paying holiday pay to people without there knowledge, and on one occasion paid holiday pay as real earned wages, and something else about avoiding tax on his products(currently trying to get all info on this). Is there anything I can do at all? How would you approach your boss if you thought he was doing something he shouldn't? How could you get more info? All help and advice is much appreciated.