Government or company decisions on whom to hire are mostly delegated to politicians, public sector officials or human resources and procurement managers. Due to anti-corruption laws, agents cannot sell contracts or positions that they are delegated to decide upon. Even if bribing is ruled out,...

Publicly traded firms in the U.S. typically determine C.E.O. compensation by benchmarking the pay of their C.E.O.s against the pay of C.E.O.s in “peer” firms. The naming of particular peer companies by individual firms constitutes a supra-firm relational structure (network) in which an...

This paper presents a model of endogenous network formation in the presence of peer effects for a general class of payoff functions with local complementarities in effort levels and positive local externalities. Links are one-sided and agents move simultaneously. I find that equilibrium networks...

We develop a model of informal risk-sharing in social networks, where relationships between individuals can be used as social collateral to enforce insurance payments. We characterize incentive compatible risk-sharing arrangements and obtain two results. (1) The degree of informal insurance is...

Sports represent the largest category of voluntary organizations in many European countries. This article addresses questions concerning the position, centrality and influence of sports organizations as one specific part of civil society, and is based on an approach providing information on...

We show that increasing the probability of obtaining a job offer through a network should raise the observed wages of workers in jobs found through formal channels relative to those in jobs found through the network. This prediction holds at all percentiles except the highest and lowest. The...

We survey the literature on social networks by putting together the economics, sociological and physics/applied mathematics approaches, showing their similarities and differences. We expose, in particular, the two main ways of modeling network formation. While the physics/applied mathematics...

Inside Group Lending, Social Cohesion (and/or Social Capital) is a positive factor for repayment rates. But recent research on Social Cohesion and repayment has found empirical evidence that states this relation is not positive. The present article intends to provide a critical review of such...

While strong social ties help individuals cope with missing institutions, trade is essentially limited to those who are part of the social network. We examine what makes the decision to trust a stranger different from the decision to trust a member of a given social network (a friend), by...