Both Real Canadian Superstore and No Frills are making masks the rule in all their stores, starting on Saturday (Aug. 29).
The stores let customers know about the new mandatory shopping requirement in social media posts that went up Aug. 22.
Mission and Surrey Superstore locations both had employees test positive for COVID-19 at their stores last month.
Meanwhile, on Aug. 20 an outbreak causing nine infections was traced back to a Loblaws distribution centre in Surrey.
Both No Frills and Superstore are owned by Loblaws Companies, along with Shoppers Drug Mart and Loblaws Markets, but no mask mandate has been handed down for the latter stores.