Southern China's Shenzhen City has drafted new labor rules to smooth industrial relations in the special economic zone (SEZ), after the manufacturing hub was stung by a series of worker strikes earlier in the year.

The draft law is scheduled to be reviewed as early as September in a meeting of the standing committee of the Municipal People's Congress, which stipulates that the class salary negotiations shall be conducted at least once a year.

Fu Bolun, one of the law's chief drafters, said the law will establish a mechanism for negotiation of periodic pay rises in order to minimize labor disputes.

Thirty years after becoming a SEZ, the booming Shenzhen economy was hit by a spate of worker strikes and even deaths.

Some said the SEZ is enduring the pains of growing-up -- according to a Chinese saying, someone is not mature enough until he hits his thirties.

A city of migrants, the former fishery village bordering Hong Kong has seen 8 million outsiders flood in. About 70 percent of them come from rural areas and work labor-intensive jobs.

But low salaries, long the city's comparative advantage in attracting foreign investment, triggered many high-profile industrial conflicts in recent months.

Workers began striking here and in nearby cites in Guangdong province in May. Companies including Omron (Guangzhou) Automobile Electronics and auto-parts suppliers for Honda and Toyota were affected.

Labor issues also cost some lives, as many questioned the management practices of Foxconn - the world's biggest electronics contractor and the maker of the iPhone and iPad - after 12 workers fell to their deaths from the company's buildings in Shenzhen.

The company increased average monthly wages of its assembly line workers from 900 RMB to 2,000 RMB in June.

Soon after that, Shenzhen lifted its minimum wage to 1,100 RMB a month.

Professor Yue Jinglun at Sun Yat-sen University in Guangdong Province said it is the right time for China to improve the welfare of its workers.

"Legislation is the right way," he said.