We characterize the set of second-best optimal "menus" of student-loan contracts in a simple economy with risky labour-market outcomes, adverse selection, moral hazard and risk aversion. The model combines student loans with an elementary optimal income-tax problem. The second-best optima...

We derive testable conditions ensuring that the income tax is optimal when agents are ex-ante identical but face idiosyncratic income risk. The optimal tax depends positively on both absolute risk aversion and risk variance and negatively on labor supply elasticity and absolute prudence. The...

Nous cherchons à mesurer l'impact de l'article 55 de loi SRU sur la production effective de logements sociaux, en utilisant plusieurs méthodes contrefactuelles (Double Différence, Double Changement) et en les confrontant à une nouvelle méthode qui utilise uniquement l'information passée...

Cette étude s'intéresse à l'effet du dispositif dit "Scellier" d'aide à l'investissement locatif privé sur le prix des terrains à bâtir. Notre méthode d'évaluation se situe dans le cadre de l'évaluation contrefactuelle d'une politique publique développée par Rubin. Nous mettons en...

This paper provides a method to single out customer-based discrimination in the housing market. We build a matching model with ethnic externalities where landlords differ in the number of housing units they own within the same building. Multiple-dwelling landlords discriminate more often than...

The paper investigates the link between the over-exposure of African immigrants to unemployment in France and their under-representation in jobs in contact with customers. We build a two-sector matching model with ethnic sector-specific preferences, economy-wide employer discrimination, and...

We investigate how potential tax-driven migrations modify the Mirrlees income tax schedule when two countries play Nash. The social objective is the maximin and preferences are quasilinear in income. Individuals differ both in skills and migration costs, which are continuously distributed. We...

Il est procédé à l'estimation par maximum de vraisemblance de 6 modèles qui font intervenir d'une manière tantôt substituable, tantôt complémentaire trois facteurs de non-emploi : le plus ou moins grand désir de travailler lié aux incitations financières, une productivité...