The role of China's household registration system in the urban-rural income differential

Together with the rapid growth of the Chinese economy, there has been a growing divide between the earnings of urban and rural residents. This paper focuses on China's household registration system, or 'hukou', as a potential source of the earnings gap. Using multiple waves of data from the China Health and Nutrition Survey from 1993 to 2011, we take advantage of variation in hukou status generated by individual-level changes. We control for fixed individual-specific characteristics that determine earnings and estimate an urban hukou 'premium'. Urban hukou holders earn almost 30% more than rural hukou holders, but after we account for individual fixed characteristics, the urban hukou premium drops to 6-8%. We also find important differences between men and women. The empirical evidence indicates the hukou system is a component of the urban-rural earnings differential, but its importance should not be overstated. The elimination of the hukou system alone cannot address long-standing inequities in access to social services between rural and urban populations.