Unemployment Insurance Fraud and Optimal Monitoring
研究了如何通过税收、补贴和监控的组合来防止在职人员骗取失业金，发现最优政策是定期监控，且监控成本仅为美国现行系统的60%。
An important incentive problem for the design of unemployment insurance is the fraudulent collection of unemployment benefits by workers who are gainfully employed. We show how to efficiently use a combination of tax/subsidy and monitoring to prevent such fraud. The optimal policy monitors the unemployed at fixed intervals. Employment tax is nonmonotonic: it increases between verifications but decreases after a verification. Unemployment benefits are relatively flat between verifications but decrease sharply after a verification. Our quantitative analysis suggests that the optimal monitoring cost is 60 percent of the cost in the current US system.