This paper sets up a microeconomic theory of labor unions. It discusses their formation and goals, their hierarchical structure, and the nature of rent distribution. The theory provides predictions for the probability that an industry or occupation will be unionized, the proportion of that...

A model is provided whereby a monopolist firm chooses to price its product at zero. This outcome is shown to be driven by the assumption of 'free disposal' alongside selection markets (where prices impact on a firm's costs). Free disposal creates a mass point of consumers whose utility from the...

Models of firm conduct are the cornerstone of both theoretical and empirical work in industrial organization. A recent contribution (Berry and Haile, 2014) has suggested the use of exclusion restrictions to test alternative conduct models. We propose a pairwise testing procedure based on this...

We propose an approximation method for analyzing Ericson and Pakes (1995)-style dynamic models of imperfect competition. We develop a simple algorithm for computing an ``oblivious equilibrium,'' in which each firm is assumed to make decisions based only on its own state and knowledge of the long...

The ready-to-eat cereal industry is characterized by high concentration margins, large advertising to sales ratios, and numerous introductions of new products. Previous researchers have concluded that the ready-to-eat cereal industry is a classic example of an industry with nearly collusive...

This paper develops a model of informal procurement within Japanese keiretsu so as to consider effects on intermediate-good imports, such as auto parts. Parts-suppliers make relationship-specific investments that benefit the auto-maker and prices are determined by bargaining after investment has...

Business groups often contain banks or near banks that can protect group firms from economic shocks. A group bank subordinate to other group firms can become an "organ bank" that selflessly bails out distressed group firms and anticipates a government bailout. A group bank subordinating other...

In lower-income economies, stocks exhibit less idiosyncratic volatility and business groups are more prevalent. This study connects these two findings by showing that business group affiliated firms' stock returns exhibit less idiosyncratic volatility than do the returns of otherwise similar...