The Walmart Effect

Monopsony: Apparently just the presence of a Walmart impoverishes a community:

What’s going on here? Why would Walmart have such a broadly negative effect on income and wealth? The theory is complex, and goes like this: When Walmart comes to town, it uses its low prices to undercut competitors and become the dominant player in a given area, forcing local mom-and-pop grocers and regional chains to slash their costs or go out of business altogether. As a result, the local farmers, bakers, and manufacturers that once sold their goods to those now-vanished retailers are gradually replaced by Walmart’s array of national and international suppliers. (By some estimates, the company has historically sourced 60 to 80 percent of its goods from China alone.) As a result, Wiltshire finds, five years after Walmart enters a given county, total employment falls by about 3 percent, with most of the decline concentrated in “goods-producing establishments.” 

Once Walmart has become the major employer in town, it ends up with what economists call “monopsony power” over workers. Just as monopoly describes a company that can afford to charge exorbitant prices because it lacks any real competition, monopsony describes a company that can afford to pay low wages because workers have so few alternatives. This helps explain why Walmart has consistently paid lower wages than its competitors, such as Target and Costco, as well as regional grocers such as Safeway.