Preventing Ex-ante and Ex-post Collusion between Independent Directors and Managers

Both in theory and practice,the collusion between managers and independent directors couldn't be neglected in Chinese listed companies.Based on the research of collusion-prevention theories in foreign countries and in China,a model of optimal incentive mechanism of preventing ex-ante and ex-post collusions is established.The necessary conditions and some suggestions for its application are presented to promote the normal and efficient exertion of independent director system.