This will depend on what jurisdiction you reside in, but for a role such a courtesy clerk, the minimum is 14 while anything else is 16.
Pretty sure 15. My Neighbour worked at Superstore at 15 like 4 years ago
16 years old
Answered - Bakery Clerk (Current Employee) - St. John's, NL
You have to be 16 if the department you're applying for works with big machinery, knives, etc. Those departments include bakery, deli, seafood/meat, and grocery. The only department that hires under 16 (if you're turning 16 that year) is front end/cash.
Answered - Deli Clerk (Former Employee) - Beamsville, ON
You have to be 16 I believe.
Answered - Cashier (Current Employee) - Whitby, ON
I dont have this informtation
Answered - Deli Clerk/Customer Service Representative (Former Employee) - Red Deer, AB
Probably like 16
Answered - Deli Clerk (Former Employee) - Dartmouth, NS
You have to be sixteen.
Answered - Cleaner/ baker (Former Employee) - Edmonton, AB
15 years old
Answered - Produce Worker/cashier and carts (Current Employee) - Ottawa, ON
You have to be 16 years old
Answered - Cashier (Current Employee) - Etobicoke, ON