Eli Friedman talks them up:
Today, the Chinese working class is fighting. More than thirty years into the Communist Party’s project of market reform, China is undeniably the epicenter of global labor unrest. While there are no official statistics, it is certain that thousands, if not tens of thousands, of strikes take place each year. All of them are wildcat strikes – there is no such thing as a legal strike in China. So on a typical day anywhere from half a dozen to several dozen strikes are likely taking place.
More importantly, workers are winning, with many strikers capturing large wage increases above and beyond any legal requirements.