We analyze the role of optimal income taxation across different local labor markets. Should labor in large cities be taxed differently than in small cities? We find that a planner who needs to raise revenue and is constrained by free mobility of labor across cities does not choose equal taxes...

We analyze the role of optimal income taxation across different local labor markets. Should labor in large cities be taxed differently than in small cities? We find that a planner who needs to raise revenue and is constrained by free mobility of labor across cities does not choose equal taxes...

We consider the problem of two agents bargaining over the relative price of two goods they are endowed with. They alternatingly exchange price offers and the utilities are discounted. The recipient of an offer can either accept it and choose the quantities to be traded, or reject and...

A model of directed search with a finite number of buyers and sellers is considered, where sellers compete in direct mechanisms. Buyer heterogeneity and Nash equilibrium results in perfect sorting. The restriction to complementary inputs, that the match value function Q is supermodular, in...

We document the evolution of markups based on firm-level data for the US economy since 1950. Initially, markups are stable, even slightly decreasing. In 1980, average markups start to rise from 18% above marginal cost to 67% now. There is no strong pattern across industries, though markups tend...

To date, little is known about the evolution of market power for the economies around the world. We extract data from the financial statements of over 70,000 firms in 134 countries, and we analyze and document the evolution of markups over the last four decades. We show that the average global...