NOTE : I am not a lawyer. Please get professional advice before doing anything rash.

This was written on 26th March 2020. Things are changing rapidly. You have been warned.

SEE ALSO : COVID 19 Absences

The legislation is here : https://www.legislation.gov.au/Details/C2020C00071

The Minister’s rules are here : https://www.legislation.gov.au/Series/F2017L01464

The amendment to the Minister’s Rules related to COVID 19 are here : https://www.legislation.gov.au/Details/F2020L00295

Yellow highlighting below is mine.

Legislation

Amendments to Ministers Rules

So until you have been forced to close by a Health Agency what you claim must match what you charge or you are breaking the law.