In this article, we study wealth effects, i.e., the response of consumption to exogenous changes in wealth. We use a consumption-saving model with endogenous retirement to show that the endogenous response of the value of a worker's human capital to changes in her wealth helps to account for the...

We study the optimal auditing of a taxpayer’s income in a dynamic principal-agent model of hidden income. Taxpayers in our model initially have low income and stochastically transit to high income that is an absorbing state. A low-income taxpayer who transits to high income can underreport his...

This paper studies the stability of a stochastic optimal growth economy introduced by Brock and Mirman [Brock,W.A., Mirman, L., 1972. Optimal economic growth and uncertainty: the discounted case. Journal of Economic Theory 4, 479–513] by utilizing stochastic monotonicity in a dynamic system....

In this paper, we develop continuous-time methods for solving dynamic principal-agent problems in which the agent's privately observed productivity shocks are persistent over time. We characterize the optimal contract as the solution to a system of ordinary differential equations and show that,...

We document evidence of firm bribery in China’s split share reform, which allows controlling non-tradable shareholders to compensate tradable shareholders to make their shares tradable. We find that firms provided private benefits to some tradable shareholders in exchange for their vote on...

We study how best to reward innovators whose work builds on earlier innovations. Incentives to innovate are obtained by offering innovators the opportunity to profit from their innovations. Since innovations compete, awarding rights to one innovator reduces the value of the rights to prior...