In Chapter 1, I study the efficiency properties of competitive search equilibria in economies with informational asymmetries. Employers and workers are both risk-neutral and ex-ante homogeneous. I characterize an equilibrium where employers post contracts and workers direct their search towards...

This dissertation consists of three essays in the intersection of the theory of international trade and the theory of the firm. The first essay starts by unveiling two systematic patterns in the volume of intrafirm trade. I then show that these patterns can be rationalized in a theoretical...

Chapter 1 analyzes Pareto optimal non-linear taxation of profits and labor income in a private information economy with endogenous firm formation. Individuals differ in both their skill and their cost of setting up a firm, and choose between becoming workers and entrepreneurs. I show that a tax...

This thesis studies two strategies that households may use to keep their consumption smooth in the face of fluctuations in income and expenses: credit (borrowing and savings) and insurance (state contingent transfers between households). The first chapter asks why insurance among households in...