If you look at the Terms and Conditions for your account it is quite clearly set out.
Major supermarkets are Bi-lo,Fishers, Coles, Food for Less, Harris farm Markets, Fresh Provisions, Macro, Safeway, Supabarn, Thomas Dux, Woolworths.
Officeworks is not a supermarket.
Government includes Australian Tax Office, Australia Post, and federal, state,and local government bodies.