Information, Mobile Communication, and Referral Effects
利用中国北方某城市电信运营商的全部手机记录，首次直接证明求职者与推荐人在工作变动期间通信增加，社交网络提供的信息缓解了信息不对称并改善了劳动力市场表现。
This paper uses the universe of cellphone records from a Chinese telecommunication provider for a northern Chinese city to examine the role of information exchange in urban labor markets. We provide the first direct evidence of increased communication among referral pairs around job changes. Information provided by social contacts mitigates information asymmetry and improves labor market performance.