We use firm's endogenous contractual response to help implement the constrained first best through a simple yet powerful progressive labor income tax system. In our model, workers privately experience both a persistent ability shock and many transient productivity shocks during their life...

The empirical evidence presented in this paper casts serious doubts on the by now widely accepted "stylized factes" of the exchange rate based stabilization programs (ERBS) as they are stated in Kiguel and Liviatan (1992) and in vegh (1992).

We fully characterize the preferences relations that can be represented by a utility. Representation is equivalent to the condition that preferences do not have too many "jumps". A characterization of preferences that can be represented by a continuous utility follows trivially from our...

This paper formalizes the relation between comparative statics and the out-of-equilibrium explanation for how a system evolves after a change in parameters.

Changes in the parameters of an n-dimensional system of equations induce changes in its solutions. For a class of such systems, we determine the qualitative change in solutions given certain qualitative changes in parameters. Our methods and results are elementary yet useful. They highlight the...

The literature on games of strategic complementarities (GSC) has focused on pure strategies. I introduce mixed strategies and show that, when strategy spaces are one-dimensional, the complementarities framework extends to mixed strategies ordered by first-order stochastic dominance. In...