Tailwheel, i was casting a wide assertion in regards to a disincentive. You won't pay the thousands to the immigration dept for an application to employ a 457 when you can get the same locally at the same price.
as it stands for aircraft engineers, due to the lack of investment in skills training, lack of regulatory reform, looter management style etc, Australian LAMEs are being replaced by 'super' 5 cat mech/av combined lames trained in Singapore and china, imported by jhas and amsa because those companies can rightfully assert that bugger all Australians hold those qualifications and the ones that do won't work for 100k/year.
That's the dynamic currently in place in aviation, Australians are 10 years behind the world and therefore discriminated against.
Normally its a disincentive - in aviation its an incentive. Plenty of jobs for foreigners.