The object of this article concerns the effect of the exogenous jobs’ complexity on the companies’ behavior regarding the qualification choices. Using a specific comparison model in which workers are vertically differentiated, we are able to demonstrate that in case of a skill-biased...

We consider a matching model where firms face a trade-off between the productivity and the expected duration of jobs. As firms ignore the effect of their decision on the unemployment costs, hence the payroll taxes they must pay, the productivity as well as the destruction rate are too high....

In this article, we study the effect of the Negative Income Tax (NIT) on reducing inequalities. Using a matching model with a continuous distribution of worker skills, we show that a NIT reduces inequalities in favor of less qualified workers by making firms less selective and jobs less complex....