This work introduces a new mechanism generating procyclical comovements of labor productivity, employment, through endogenous variations of workers' effort, in a simple model with efficiency wages, near a locally indeterminate steady state. A current endogenous countercyclical uncertainty shock...

We evaluate the income elasticity of the aggregate budget share spent on a sub-group of commodities, in a competitive framework, by a continuum of agents having the same income, but heterogeneous behavior described by an "homothetic preferences scaling factor" having a bounded Pareto...

This work introduces a new mechanism that is able to generate procyclical comovements of aggregate labor productivity, employment and real wages, through endogenous variations of workers' effort, in a simple model involving structural unemployment, efficiency wages, financial market...