This document summarizes internal labor migration trends in China. It finds that the share of migrant workers without local residency rights ("non-hukou" migrants) is significant across industries in Wuhan, ranging from 40-56%. Nationwide, the floating population of internal migrants grew rapidly from 82 million in 1982 to over 140 million in 2003. By 2020, China's urban population is projected to reach 65% of the total population, around 950 million people, with 80% of urban growth coming from net rural-urban migration of around 20 million people per year. This rapid urbanization will create challenges around employment, infrastructure/housing, education, poverty and social stability.