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Xi Jinping and Li Keqiang are taking over China’s leadership at a time when growth has slackened and labor issues have become more complex.

Reports that businesses such as Foxconn Technology Group are raising wages and struggling to recruit workers in China have intensified debate over just how many surplus workers the country still has. Meanwhile, a boom in college-educated Chinese has raised concerns of an impending threat to U.S. competitiveness. These seemingly disparate concerns about China’s labor force are actually linked by common underlying factors, with critical implications for China’s ability to remain the growth engine of the world.