Thousands of workers have gone on strike at a Foxconn plant in China making components for Apple's iPhone 5.
The stoppage at the plant in Zhengzhou, in central China, took place on Friday after Foxconn increased product quality levels and demanded workers work through a national holiday, the Yahoo news reports.
Between 3,000 and 4,000 employees participated in the strike.
"This strike is a result of the fact that these workers just have too much pressure," Li Qiang, China Labour Watch director said.
The China Labour Watch, citing workers at the plant, said the work stoppage resulted in "a state of paralysis" to multiple iPhone 5 production lines.
Foxconn has denied of any strike reports.
The company stated that "any reports that there has been an employee strike are inaccurate, there has been no workplace stoppage in that facility or any other Foxconn facility and production has continued on schedule."
"Employees who have worked during the China national holidays at all our operations in China have done so voluntarily and this is supported by written documentation and any reports to the contrary are inaccurate."
This comes straight after a huge brawl which took place last month among workers at a Foxconn plant in the northern city of Taiyuan.
In 2010, at least 13 Foxconn employees in China have committed suicides, which activists blamed on tough working conditions, prompting calls for better treatment of staff.