In that case, join SAGE-AU and ask for advice. SAGE-AU is the Australian branch of SAGE, the System Administrators Guild. But they're not picky - they take programmers too :).
Someone at SAGE should be able to guide you in the right direction. If you don't want to go down that route, slap down $100 for an initial consultation with a lawyer. We don't run under the same rules as the states - Australia is a more socialist country, with more protections for workers.
If you are a contractor, you can contact the ACCC or other professional organisations (since you will be in a business transaction). If you are becoming an employee, then you can probably start at the industrial relations department in your state. If that's the wrong department, then they can tell you who to call.
Check to see if there are any 'awards' or enterprise agreements covering the company you are working for.
I didn't believe in evil until I dated it.