You would have to apply for a new visa; your temporary visa will neither hurt nor help your future application. If you don't apply for a new visa at the expiry of your temporary visa, you cannot work in Australia. The only onerous terms are that you cannot change employers (the visa becomes invalid unless you can get approval from the Australian gov't, in practice this is never done) and you cannot sub-contract -- you must work directly for the hiring employer. Strictly interpretted this makes any consulting or off-site work illegal under this visa (within Australia). So your employer is neither helping nor hurting your long term relocation to Australia. Could they do more? Of course! Will they? Almost certainly not....this is the customary and usual arrangement, and from their standpoint all the drawbacks are advantages.