中国における賃金格差

── 地域間格差と業種間格差 ──

抄録

This study is a statistical disparity analysis of the wages of the staff and working (Zhigong) class in China. The Chinese government strictly controlled the wage system of state owned enterprises before the reform and opening of China. However, this system is gradually being reformed and each enterprise can independently decide their own wage system. As a result, the wage disparity has expanded since the reform and opening of China. In 2006, the staff and workers (Zhigong) were 110 million people, which is about 14.6 percent of the workers and about 8.5 percent of the population of China. To understand the recent wage disparities in China, disparity was estimated with a one stage Mean Logarithm Deviation Decomposition Index and from two directions in the decomposition pattern of disparity across region and industrial sector.
Several findings are presented in this paper. First, a rapid expansion of disparity occurred during the measurement period. The index was below 0.02 at the start and increased to about 0.08 at the end. Second, the main factor of disparity gradually changed from regional disparity to sector disparity. Third, the regional disparity in each sector expanded in the higher value sectors but decreased in the agriculture and industry sectors. Fourth, the tendencies in the disparity of each sector in each region differed.
From these results, wage disparity is a very serious problem in China. Therefore, several difficult correspondences are required from the government to reduce various disparities in the future.

JEL classification: J31, O5