The non-stationarity of many macroeconomic time-series has lead to an increased demand for economic models that are able to generate fragile equilibria. For instance, the natural unemployment rate is al- lowed to shift over time depending on past unemployment. Actually, many European...

La Nouvelle Macroéconomie Keynésienne a récemment insisté sur les notions de complémentarité stratégique et de défauts de coordination. En particulier, l'hétérogénéité entre «répondants» et «non-répondants » a été perçue comme donnant un poids disproportionné aux «...

This paper considers a special non-linear time series problem, that of testing for co-integration in a Bayesian framework when there is a break in the co-integrating relationship. It is shown that a partial linearization of the likelihood function solves many puzzling questions, in particular...

There is plenty of individual-level evidence, based on the estimation of Mincerian equations, showing that better-educated individuals earn more. This is usually interpreted as a proof that education raises labour productivity. Some macroeconomists, analysing cross-country time series, also...

This paper offers an analysis of the optimality of unemployment benefits based on the concept of no-envy. Using a general equilibrium framework whit uncertainty, we derive the conditions for a trade-off between the intensity of envy and the expected percentage of envious persons. If the...