Ever since the new Labor Contract Law went into effect on January 1, 2008, there have been continuous conflicts between workers and owners of private companies in Guangzhou, Shenzhen, Dongguan, and other cities in Guangdong Province. On January 20, two large-scale strikes took place simultaneously in foreign owned enterprises in Tangxia Town of Dongguan City, involving more than 1000 workers. The strikers accused the employers of cutting their pay by adopting new ways of calculation. The furious workers blocked the road, confronting hundreds of police. Dozens of people were injured.
Source: Radio Free Asia, January 22, 2008
http://www.rfa.org/mandarin/shenrubaodao/2008/01/22/bagong/