This article investigates the competition effects of supermarket services using fluid milk as a case study. A simultaneous equation model for services and price competition is estimated with scanner data from fifteen supermarket chains using two alternative measures of services, namely store...

After revolutionizing the concept of mass merchandising with its Discount Stores, Wal-Mart has entered food retailing with its Supercenters, and has become the largest food retailer in the United States. Despite its relevance, little empirical research has focused on explaining the company's...

Wal-Mart, the largest retailer worldwide, has been suspected of exercising market power over input providers, both merchandise suppliers and workers. However, in spite of a growing body of literature investigating the beneficial economic impact of the company through its price-lowering effect,...

This article investigates the impacts of private labels (PLs) on fluid milk prices and price differentials using 2,759 supermarket-level observations from 10 cities. Non-parametric results reveal that although PL milk prices decrease as PL milk shares expand, eventually the effect is to increase...

This paper measures the degree of monopsony power exerted by Wal-Mart over retail workers using a dominant-firm model and data on contiguous U.S. counties where the company operates, presenting for the first time a measure of the anti-competitive behavior of the company. Empirical results show...

This paper measures the potential degree of monopsony power that Wal-Mart can exert over retail workers using a dominant-firm model and nationwide, county-level data, presenting for the first time a measure of the company's potential anti-competitive behavior and detailed spatial impacts on...

This paper analyzes Wal-Mart’s expansion into food retailing, focusing on its store conversion strategy via a formal IO entry framework. Forty-eight different competing model specifications are considered to determine how the company perceives competition from incumbent food retailers and how...