Celebrity chef George Calombaris’ restaurant empire is facing voluntary administration after it emerged last year staff were backpaid $7.8 million in wages and superannuation in 2017.

The business employs about 500 staff at its 18 restaurants, which include Gazi, the Jimmy Grants souvlaki chain and Yo-Chi frozen yoghurt stores.

George Calombaris is one of Australia's best known chefs.
George Calombaris is one of Australia’s best known chefs. (AAP)

It is expected that all staff and creditors will be paid, but some poorly performing restaurants could be sold.

Made Establishment was ordered to make a $200,000 contrition payment after the underpayments were uncovered.

The fine sparked outrage from unions, who argued the payment did not reflect the scale of the underpayments.

The financial position of Calombaris’ Made Establishment was taken into account when determining how much he should be forced to pay.

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