In August 2007 the United Kingdom experienced its first bank run in over 140 years. Although Northern Rock was not a particularly large bank (it was at the time ranked 7th in terms of assets) it was nevertheless a significant retail bank and a substantial mortgage lender. In fact, ten years...

It turns out that like the rest of us, billionaires experience wealth inequality. (Individuals who top the Forbes billionaire list are far richer than those at the bottom of the list.) Interestingly, this billionaire wealth concentration fluctuates over time … in tight correlation with the...

In August 2007 the United Kingdom experienced its first bank run in over 140 years. Although Northern Rock was not a particularly large bank (it was at the time ranked 7th in terms of assets) it was nevertheless a significant retail bank and a substantial mortgage lender. In fact, ten years...

Hirschman's Exit, Voice, and Loyalty highlights the role of “voice” when individuals confront an unexpected deterioration in quality. Yet, voice has received little attention. To motivate our empirical analysis, we develop a simple model of voice as the equilibrium of a relational contract...

We investigate whether greater microeconomic flexibility facilitates the process of creative destruction in the context of new trade models with heterogeneous firms (Bernard et al., 2003 and Melitz, 2003). In these models, freer trade increases aggregate productivity because high-efficiency...

In this paper, I address the simple question "What types of employees have been steadily paid more by what type of employers?" and I suggest that rising market concentration has a significant structural impact on the wage differentials between white and blue-collar workers. The innovative...

In August 2007 the United Kingdom experienced its first bank run in over 140 years. Although Northern Rock was not a particularly large bank (it was at the time ranked 7th in terms of assets) it was nevertheless a significant retail bank and a substantial mortgage lender. In fact, ten years...

This paper develops a theory of firm selection and growth and embeds it into an international trade framework of balanced growth. I assume that firm-level growth is the result of idiosyncratic productivity improvements while there is continuous arrival of new potential producers. Firms can also...

I study the properties of optimal long-term contracts in an environment in which the agent's type evolves stochastically over time. The model stylizes a buyer-seller relationship but the results apply quite naturally to many contractual situations including regulation and optimal...