Productivity is the principal driver of economic progress. It is the only force that canmake everyone better off: workers, consumers, and owners of capital. Wal-Mart has indisputably made a tremendous contribution to productivity. From its sophisticated inventory systems to its pricing innovations, Wal-Mart has blazed a path that numerous other retailers are now following, many of them vigorously competing with Wal-Mart. Today, Wal-Mart is the largest private employer in the country, the largest grocery store in the country, and the third largest pharmacy. Eight in ten Americans shop at Wal-Mart.
There is little dispute that Wal-Mart’s price reductions have benefited the 120 million American workers employed outside of the retail sector. Plausible estimates of the magnitude of the savings from Wal-Mart are enormous – a total of $263 billion in 2004, or $2,329 per household. Even if you grant that Wal-Mart hurts workers in the retail sector – and the evidence for this is far from clear – the magnitude of any potential harm is small in comparison.