The country's employment watchdog, Fair Work Australia, is also carrying out its own investigation.

BBC: Australian MP Craig Thomson in sex scandal inquiry

Fair Work Australia, the national workplace relations tribunal which carried out an initial probe, has reopened the investigation.

BBC: The scandal that could bring down Australia's government

On May 7th, a day before the budget, Fair Work Australia, a workplace tribunal, presented an explosive report after a three-year inquiry.

ECONOMIST: Australian politics: Another fine mess | The

The country's industrial regulator, Fair Work Australia, stepped in to end the dispute, ordering both sides back to work on Monday after emergency talks.

BBC: Australia's Julia Gillard furious over Qantas action