A foreign national working in Australia without a visa or in breach of their visa conditions is an illegal worker. It could be a criminal offence to employ an illegal worker, so it is important that you check the work entitlements of non-citizens you want to employ.
Not all visa holders have their visa details recorded in their passports. The best way to quickly and easily check the work entitlements of non-citizens is via the department’s Visa Entitlement Verification Online (VEVO). The service is free and VEVO is available 24 hours a day, seven days a week.