The paper mainly addresses three questions: 1) do workers tend to be employed by employers of the same ethnic group; 2) what is the structure of the equilibrium wage contract; and 3) do more ethnically homogeneous labour markets tend to have different labour contracts than more ethnically...

We consider a dual labor markets model in which the primary sector requires the presence of eMiciency wage, while the secondary sector is competitive. We show that the Solow condition does not hold in a Stackelberg equilibrium where the primary sector acts as a leader and the secondary one as a...

(english) In this paper, we investigate the glass ceiling hypothesis according to which there exists larger gender wage gaps at the upper tail of the wage distribution. We demonstrate that in some circumstances, more qualified women may be offered lower wages than men at the equilibrium. This...

This purpose of our paper is to explores the consequences of uncertainty on the remittances.These transfers are sent by a diaspora of emigrants who are motivated by altruism rather than pure self-interest. Migrants are assumed to care about the consumption of home-resident family members as well...

The main purpose of this paper is to study the economic behavior of migrants under uncertainty . We show , in particular, that the impact of the probability of return remains ambiguous regarding both the savings and labor participation of the migrants , this theoritical finding seems to...

In this paper, we examine the old-age security hypothesis according to which parents rear children because they expect the latter to care for them in their later years. In developing countries where there are no perfect capital markets, children are usually viewed as a potential source of income...

We analyze a situation where an antitrust authority delegates to an audit inspector the mission of gathering the sufficient information to condemn a cartel. The authority has two instruments at her disposal: rewarding the inspector with a proportion of the collected fine or providing him with...

Using the principal-agent- supervisor paradigm, this paper examines the occurrence of collusion in a setting where the principal has no information about the supervisor and the agent does not necessarily know the supervisor’s preferences. We formally prove the occurrence of collusion is more...