This paper investigates the reliability of SVARs to identify the dynamic effects of news shocks. We show analytically that the dynamics implied by SVARs, using both long–run and short–run restrictions, are biased. However, the bias vanishes as long as news shocks account for most of the...

This paper studies the statistical properties of impulse response functions in structural vector autoregressions (SVARs) with a highly persistent variable as hours worked and long-run identifying restrictions. The highly persistent variable is specified as a nearly stationary persistent process....

Cet article présente les contributions originelles et essentielles de T. Sargent et C. Sims à la modélisation macro-économétrique. Après avoir exposé leur critique de la modélisation existante, cet article s'attache à préciser l'originalité de leurs approches respectives. La...

This article addresses the existence of a wide range of estimated government spending multipliers in a dynamic stochastic general equilibrium model of the euro area. Our estimation results and counterfactual exercises provide evidence that omitting the interactions of key ingredients at the...

In this paper, we discuss the observational equivalence between two monetary policy rules: a constant money growth rule and an interest rate rule. From the equilibrium conditions of a sticky prices model, we consider: (i) the Taylor rule parameter implied by the model with exogenous money...

The usefulness of SVARs for developing empirically plausible models is actually subject to many controversies in quantitative macroeconomics. In this paper, we propose a simple alternative two step SVARs based procedure which consistently identifies and estimates the effect of permanent...

The response of hours worked to a technology shock is an important and a controversial issue in macroeconomics. Unfortunately, the estimated response is generally sensitive to the specification of hours in SVARs. This paper uses a simple two-step approach in order to consistently estimate...

Recent studies have highlighted the existence of asymmetries in employment dynamics. This paper contributes to the analysis of this dynamics through the explicit modelling of its two components -job creations and job destructions. We propose a simple matching model extended for endogenous...

We study the welfare implications of shutting down long-run unemployment and exclusion. We develop a heterogeneous-agents model along the lines of Krussell and Smith (1998) that takes the existence of uninsured long-run unemployment explicitly into account. The status of a given individual in...