Anyone ever had a job as a stocker at Walmart?

I've read the descriptions of the backroom/stocker job at Walmart on their website, but they aren't exactly clear on the responsibilities.

They list things that employees usually do, such as helping people with questions, restocking, unloading from trucks, perhaps inventory check and labeling etc.

Do backroom employees have to do every single one of these things, or is it divided by responsibilities among employees (such as unloaders mostly drive lifts and unload etc, while stockers mostly takes boxes into the store floor and restock items)?

Also how is overnight shift? What are the usual hours, and is it better or worse than day shift in your opinion?

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