Employment of overseas workers: The Department of Immigration and Citizenship (DIAC) states that a business visitor visa should not be used to employ an overseas worker in circumstances where:
• the position is ongoing (more than 6 weeks); or
• cannot otherwise be done by an Australian citizen or permanent resident and is highly specialised in nature, is needed to be undertaken because of an emergency or urgent situation; or
• in very limited and exceptional cases, is of such economic or social significance to Australia and its citizens and residents that it is in ‘Australia's interest’.
In all other circumstances a 457 visa should normally be used.