Two main aspects of the business cycle have been recently considered as important lines of research: business formation and cyclical fluctuations of markups. In an explicitly imperfect competition framework, one needs to understand how entry and exit are related to markup fluctuations, and how...

This paper studies co-movement in economic aggregates at the national and international level. At the national level, consumption, investment and hours worked display positive co-movement across the business cycle. Technology shocks, which directly affect the real wage rate, can drive...

In this paper we measure the welfare cost of fluctuations in a simple representative agent economy with nonclearing markets. The market friction we consider involves price rigidities and a voluntary exchange rationing scheme. These features are incorporated into an otherwise standard...

In this paper we measure the welfare cost of fluctuations in a simple representative agent economy with nonclearing markets. The market friction we consider involves price rigidities and a voluntary exchange rationing scheme. These features are incorporated into an otherwise standard...

Nous présentons dans cet article un modèle d'équilibre général intertemporel qui rend compte de l'influence de l'inflation dans le cycle en France et aux Etats-Unis. L'adoption d'une fonction d'utilité assez générale permet de dégager l'importance des élasticités de substitution...

This paper is concerned with the recent developments of macroeconomic intertemporal general equilibrium models with imperfect competition and variable markups at the business cycle frequency. We first present some empirical puzzles that can be explained by models with cyclical markups, and how...

This paper studies the dynamic properties of the labour demand model with non-convex adjustment costs proposed by Bentolila and Bertola [1990]. With this model we evaluate the importance of the firing costs, following a great shock, for the dynamics of adjustment of the aggregated labour demand...

[fre] Les ajustements des prix et des salaires enjeux théoriques et mesure statistique . Les rigidités des prix et des salaires nominaux sont au coeur du débat théorique macro-économique. Selon les économistes keynésiens, elles permettent de rendre compte des effets des chocs de demande -...

Lucas [1987] has shown that in a representative agent framework, the potential welfare gain from stabilizing consumption around its mean is small. We provide an example and some insight for why Lucas’ measure is an upper bound of the welfare cost of fluctuations in walrasian economies.