许敏波、Nina Yin、Sanxi Li: Multitask Assignments with Adverse Selection. Economics Letters (SSCI, ABS3星), Available online 15 May 2019, DOI: https://doi.org/10.1016/j.econlet.2019.05.014

Abstract：

In a simple multitask assignments model with adverse selection, we derive the optimal contracts when the principal assigns two tasks to different agents or to a single agent. Assigning tasks to different agents introduces a cross-checking device, while assigning tasks to a single agent relaxes participation constraints. The principal prefers to combine tasks to a single agent except for the case in which the correlation of types is positive and strong enough.