The success of Costco, Trader Joe’s, QuikTrip and Mercadona, Spain’s biggest supermarket chain, indicate, [business professor Zeynep Ton] argues, that well-paid, knowledgeable workers are not an indulgence often found in luxury boutiques with their high markups. At each of the aforementioned companies, workers are paid more than at their competitors; they are also amply staffed per shift. More employees can ask customers questions about what they want to see more of and what they don’t like, and then they are empowered to change displays or order different stock to appeal to local tastes. (In big chains, these sorts of decisions are typically made in headquarters with little or no line-staff input.) Costco pays its workers about $21 an hour; Walmart is just about $13. Yet Costco’s stock performance has thoroughly walloped Walmart’s for a decade.
