An equilibrium search model of the labor market is combined with a social network. The key features are that the workers' network transmits information about jobs and that wages and firm entry are determined endogenously. Empirically, the inter-industry variation in aggregate matching efficiency...

The firm's decision to use referrals as a hiring method is studied in a theoretical model of the labor market. The labor market is characterized by search frictions and uncertain quality of the match between a worker and a job. Using referrals increases the arrival rate of applicants and...

This paper introduces an equilibrium model with firms that are heterogeneous in their productivity and analyzes their incentives for hiring through referrals or through the market. This analysis is motivated by the observation that referrals account for a larger share of hires at firms that are...

We address a basic diffculty with incorporating fairness into standard utilitarian choice theories. Standard utilitarian theories evaluate lotteries according to the (weighted) utility over ?nal outcomes and assume in particular that a lottery is never preferred over getting the most preferred...

Poverty remains one of the greatest problems of our time, causing starvation and humiliation in poor countries and contributing to problems of conflict, migration and environmental degradation effecting also richer countries. This study provides a systematical analysis of today’s donor...

We study how job seekers respond to wage announcements by assigning wages randomly to pairs of otherwise similar vacancies in a large number of professions. High wage vacancies attract more interest, in contrast with much of the evidence based on observational data. Some applicants only show...

Twelve percent of the Malawian population is HIV infected. Eighteen percent of sexual encounters are casual. A condom is used a third of the time. To analyze the Malawian epidemic, a choice-theoretic general equilibrium search model is constructed. In the developed framework, people select...

We study how job seekers respond to wage announcements by assigning wages randomly to pairs of otherwise similar vacancies in a large number of professions. High wage vacancies attract more interest, in contrast with much of the evidence based on observational data. Some applicants only show...