Radio Rentals get around because they provide essential items like fridges, microwaves, etc.
Here's the full list:
http://www.humanservices.gov.au/business/services/centrelink/centrepay-for-business-and-organisations/
No nothing to do with the size of the company, you need to provide an 'essential service' eg accommodation, child care, utilities, rent of essential household items, etc.