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...

Concealed earnings represent the largest source of fraud in the U.S. unemployment insurance system. Individuals with relatively low earnings constitute a larger fraction of those committing such fraud. High-earnings individuals, however, account for larger dollar amounts of this fraud.

In the U.S. unemployment insurance program, most of the overpayments due to fraud arise from individuals collecting benefits while they are gainfully employed. In addition, the overpayments are dwarfed by payments unclaimed by some who are eligible for unemployment benefits.

Not all who are eligible to receive unemployment benefits actually collect them.

Concealed Earnings fraud accounts for almost two-thirds of the total overpayments due to all fraud.

The most prevalent incentive problem in the U.S. unemployment insurance system is that individuals collect unemployment benefits while being gainfully employed. We show how the unemployment insurance authority can efficiently use a combination of tax/subsidy and monitoring to prevent such fraud....