Immigration Dob-in Line: 1800 009 623
Use this toll free number to advise the department, about a person working or living illegally in Australia or an employer not meeting their sponsorship obligations under the Temporary Business 457 visa program.
Hours of operation: Monday – Friday 0830-1630 AEST (voicemail facility available out of these hours).
Alternatively, you can fax information to the department.
Fax: 1800 009 849
Information from the public provides important support to the department in its efforts to maintain the integrity of Australia’s borders and immigration programs.
More details Here!