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.

Calombaris’ Made Establishment group, which employs about 500 staff at its 18 restaurants, will reportedly make a decision on whether or not it will go into administration after a meeting on Monday afternoon, according to various media outlets.

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