We propose a theory of low-frequency movements in unemployment based on asymmetric real wage rigidities. The theory generates two main predictions: long-run unemployment increases with (i) a fall in long-run productivity growth and (ii) a rise in the variance of productivity growth. Evidence...

This paper focuses on the issue of limited financial market participation and determines a lower bound on the level of fixed transaction costs that are required to reconcile observed portfolio choices with asset returns within an isoelastic utility framework. The bound is determined from the set...

I look at an exogenous decrease in the desire to save in a two-sector-two-period overlapping generations model, where the consumption good is capital-intensive and the elasticities of substitution in production are "small". It is shown that there is a Keynesian-type multiplier at work, even...

This paper analyses the influence of norms of fairness on wage formation. Fairness is defined by `real-wage' and `relative-wage' norms that relate wage offers to workers' own current wage and to the wages of other groups of workers, and, to avoid shirking, firms pay fair wages. The wage norms...

This paper presents a sequential model suited to analyze transitions between equilibria. Disequilibrium dynamics are obtained from a standard monopolistic competition model, by introducing a sequential structure and reasonable hypotheses about technology, finance constraints, expectation...

The 1997 collapse of the Albanian economy caused by the collapse of economy-widePonzi schemes contrasts sharply to itssuccess status as a post-socialist transition country in the years 1992-1996. Inthis paper, an attempt is made to explain this'Albanian Paradox'. The specific Albanian conditions...

This paper considers a general class of stochastic dynamic choice models with discrete and continuous decision variables. This class contains a variety of models that are useful for modeling intertemporal household decisions under risk. Our examples are drawn from the field of development...

We offer the first direct evidence of an implicit contract in a goods market. The evidence comes from the market for Coca-Cola. We demonstrate that the Coca-Cola Company left a written evidence of its implicit contract with its consumers—a very explicit form of an implicit contract. The...

Krugman has recently revitalized IS-LM with a number of succinct analytical pieces on his blog. The reverberations were remarkable. Economists, however, are known often not grasp the full content of their own and, a fortiori, of others’ models. This happened to Keynes in the days of high...

The euro zone crisis illustrates the insufficiency of adjustment mechanisms in a monetary union characterized by a large heterogeneity. Exchange rate adjustments being impossible, they are very few alternative mechanisms. This situation reflects a simple diagnosis. At the level of the whole euro...