Costco also has a pretty robust internal promotion system from what I've heard, so older employees might also be occupying management spots. Though it might al

Costco also has a pretty robust internal promotion system from what I've heard, so older employees might also be occupying management spots. Though it might also be that nearly every piece of stock at a Costco will be significantly heavier than that at Walmart, making it difficult for older people who might have more in the way of back problems etc to work there.