关键词: 产品市场竞争不完全 , 劳动力市场竞争不完全 , 企业内部工资差距 , 效率与公平

Abstract: Understanding the formation mechanism of wage inequality is the key to solving the problem of unbalanced and inadequate development in the new era and achieving the shared development. This paper analyzes the skilledunskilled wage inequality in Chinese enterprises from the perspective of joint market imperfections, also discusses the efficiency gains from eliminating imperfect competition. Based on enterprise data and constructing measurement index of imperfect competition under a unified framework, this paper finds that China's marketization reform do not necessarily lead to wage inequality, while joint market imperfections is an important reason for wage inequality. When imperfect competition exists, enterprises will also extend the product market power to the labor market, forming a greater impact on the wage inequality. It means that a single marketoriented reform cannot effectively alleviate the wage inequality. Only the simultaneous reform of products and labor markets can achieve the optimal policy effect. China's marketization reform can achieve efficiency and fairness by implementing market mechanism in the primary distribution.

Key words:  product market imperfection , labor market imperfection , wage inequality within firms , efficiency and fairness