The NSW government has brought in compulsory rent relief for tenants who have been affected by COVID. This is evidenced by the fact the tenant is eligible for NSW Covid grant or Job Saver. Please see an attached link which provides further detail as well as a template letter to send to your landlord. The link is helpful for both landlords and tenants:
https://www.smallbusiness.nsw.gov.au/get-help/covid-19/commercial-leases-and-covid-19-faqs