Pour l'assurance, l'employeur n'est pas oblige de la payer, il doit juste s'assurer que le sponsorise en a une.

Celine

Health Costs and Insurance for 457 Holders
Employers who have employees on 457 visas which were granted prior to 14 September 2009 are expected to cover costs of public hospital treatment of the 457 visa holders.

The health obligation is no longer part of the sponsorship obligations for 457 visas granted after 14 September 2009. Instead, employees must show that they have adequate medical insurance to be granted their 457 visa, and must maintain this insurance during their stay in Australia on their 457 visa.

Employers previously had significant exposure to potentially very high health costs under the previous sponsorship obligation regime. Requiring the employee to hold suitable insurance is a more sensible way to offset the risk.

However, requirement that the insurance be already in place prior to visa grant could be rather troublesome. Many applicants would need to pay for health insurance without being sure that their 457 visa will be granted.