Abstract: This paper analyzes the characteristic of knowledge worker's human capital, and uses the framework of multitask principal-agent to establish the model in which the tasks of learning&working, and the action of performance incentive andproperty rights incentive are taken into account.Then, it discusses the relationship between performance incentive and property rights incentive, and the behaviors of learning and working.The results show that, the property rights incentive can inspire the behaviors of learning& working and optimize the performance incentive.The optimal efficiency of knowledge worker is attained when he possesses all surplus produced by his human capital, but the property rights incentive should be match with the performance incentive, and the effect will become better with property rights incentive increasing.Knowledge worker will increase the effort of learning with property rights incentive increasing, and tend to work actively with the increase of performance incentive.When the property rights incentive is absent, knowledge worker will become to dislike learning or enhance the exterior learning.

Key words: knowledge worker, human capital, property rights incentive, performance incentive, multitask principal-agent model