Oh, that's not really related to turnover.
Bread/snack cakes (Little Debbie, the bakery also does bread), chips, soda, and liquor/beer are typically handled by vendors. Coca-Cola has a guy come out and stock the Coca-Cola products. Frito-Lay has a guy handle the Frito-Lay products. Etc. They don't work for the store in any capacity.
Vendors typically come during the normal operating hours of the store. Bread guys like to be early in the morning. Chip and soda guys have routes and they'll get to you depending on how the rest of their route goes.
As for other stock, for the grocery side, the distribution center usually palletize stock based on aisle. And the pallets come shrinkwrapped on a truck that arrives at the store between 8 and 10. Someone from the store unloads the pallets from the truck into the warehouse. Once the truck is unloaded, they head back to the distribution center. At the store, the pallets are then staged near their respective aisles and workers restock the shelves overnight.
On the general goods side, the stock is loose in the truck, and a team of people unload the truck and palletize it based on department. Then those pallets are staged in the department for stocking by the overnight crew.
Source: my first job was with WalMart. I worked day stock in a few departments on both the grocery and general goods sides. I worked unloading the trucks on the general goods side. I also worked overnight on the general goods side. I've been involved with a good portion of the store side of the restocking. So all of this information is at least 20 years old, some things may have changed. But I've seen the vendors still while I'm shopping, so the broad strokes likelys till apply.
