Anzac Day shopping laws should be a "blueprint'' for all holidays in which shops are required to close, the Retailers Association says.
Shoppers were confused over which retailers could open their doors on holidays, such as Easter, and the rules needed to be clearer, Association chief executive Mark Johnston said.
Tomorrow all retail outlets have to close until 1pm.
Easter weekend saw 18 complaints made about businesses flouting Easter weekend trading laws this year, but none will be prosecuted.
That prompted Prime Minister John Key to say the legislation needed an overhaul.