In aggregate U.S. data, exogenous shocks to labor productivity induce highly persistent and hump-shaped responses to both the vacancy-unemployment ratio and employment. We show that the standard version of the Mortensen-Pissarides matching model fails to replicate this dynamic pattern due to the...

We study the cyclical behavior of job loss and hiring using CPS worker flow data, adjusted for margin error and time aggregation error. The band pass filter is used to isolate cyclical components. We consider both total worker flows and transition hazard rates within a unified framework. Our...

In the U.S. labor maarket, the vacancy-unemployment ratio and unemployment react sluggishly to productivity shocks. We show that the job matching model in its standard form cannot reproduce these patterns due to excessively rapid vacancy responses. Extending the model to incorprate sunk costs...

We employ a comprehensive matched employer-employee data set for Brazil to analyze wage determinants and compare results to Abowd, Kramarz, Margolis and Troske (2001) for French and U.S. manufacturing. Returns to education and experience in Brazilian manufacturing exceed those of the other...

This paper presents a theory of dynamic trade agreements in which external institutions, such as the WTO, play a central role in supporting credible enforcement. In our model, countries engage in ongoing negotiations, and as a consequence cooperative agreements become unsustainable in the...

This paper assesses how various approaches to modelling the separation margin a¤ect the ability of the Mortensen-Pissarides job matching model to explain key facts about the aggregate labor market. Allowing for realistic time variation in the separation rate, whether exogenous or endogenous,...

This paper develops a macroeconomic model in which investable assets flow to entrepreneurs through long-term relationships with lenders. Low asset flows cause relationships to break up due to insufficient liquidity. Multiple Pareto ranked steady states emerge from complementarity between...

This paper develops a macroeconomic model in which investable assets flow to entrepreneurs through long-term relationships with lenders. Low asset flows cause relationships to brak up due to insufficient liquidity. Multiple Pareto ranked steady staes emerge from complementarity between financial...

We propose a theory of contracting in long-term relationships, emphasizing the role of social institutions in conditioning players' joint selection of equilibria. Players adopt a social conditioning system in order to place boundaries on their recurrent negotiation and thereby sustain a...

This paper applies regime switching methods to the problem of measuring monetary policy. Policy preferences and structural factors are specified parametrically as independent Markov processes. Interaction between the structural and preference parameters in the policy rule serves to identify the...