We examine how moral hazard impacts risk-sharing when risk-taking can be part of the mechanism design. In a two-agent model with binary effort, we show that moral hazard always increases risk-taking (that is the amount of wealth invested in a risky project) whereas the effect on risk-sharing...

We analyze in this paper how various forms of state intervention can impact microfinance institutions’ lending behavior. Using a simple model where entrepreneurs receive individual uncollateralized loans, we show that, not surprisingly, state intervention through the loan guarantee increases...

We provide the first theoretical analysis of altruism in networks. Agents are embedded in a fixed, weighted network and care about their direct friends. Given some initial distribution of incomes, they may decide to support their poorer friends. We study the resulting non-cooperative transfer...

In this paper we present a model of formation and destruction of informal cooperatives in a population of agents who perform a risky activity and who are heterogeneous in terms of success in their actions. Although some agents have high-risk and others low-risk, our model displays a dynamics...

This paper analyzes the relationships between HIV/AIDS and education taking into account the appropriative nature of child income. We first build a simple theoretical model linking parental health risk, educational choice and appropriation of future children's income. We show that considering...

This paper examines the effect of moral hazard on public health insurance contract. It models primary prevention in a two period model with classification risk. Agent’s preferences appear to play an important role in the optimal determination of preventive effort and insurance between...

The aim of this paper is to analyze the impact of the existence of mutual firms on the behavior of an insurance company and more precisely to study in which situations a private insurance firm may emerge in presence of an incumbent mutual firm. Our approach differs from the existing literature...