Protests have erupted at the world’s largest iPhone factory in the Chinese city of Zhengzhou, according to images widely circulated online.
Videos show hundreds of workers marching, some confronting people in hazmat suits and riot police.
Those broadcasting the scene live claimed that the police had beaten up workers.
Last month, a rise in Covid cases saw the company close the campus, prompting some workers to leave and return home. The company then recruited new workers with the promise of generous bonuses.
Footage shared on a live-streaming site showed workers shouting, “Defend our rights! Defend our rights! Other workers were seen smashing surveillance cameras and windows with sticks.
Several clips also showed workers complaining about the food given to them and saying they had not received bonuses as promised.
“They changed the contract so that we couldn’t get the grant as they promised. They are quarantining us but not providing food,” a Foxconn employee said during his live stream.
“If they don’t meet our needs, we will continue to fight.”
He also claimed to have seen a man “seriously injured and [who] could die” after being beaten by police.
An employee recently started working at the Zhengzhou plant also said BBC workers were protesting because Foxconn had “changed the contract they had promised”.
He said some newly recruited workers were also worried about catching Covid from staff who had been there during the previous outbreak.
“These protesting workers want to get a grant and go home,” the staffer said.
There was a heavy police deployment at the factory on Wednesday morning, he said.
Other videos streamed live also showed crowds of armed police at the site.
Another newly recruited employee told the BBC he visited the protest scene on Wednesday, where he saw “a man with blood on his head lying on the ground”.
“I didn’t know why people were protesting, but they are mixing us, new workers, with positive old workers,” he told the BBC.
Foxconn has yet to comment. It is Apple’s main subcontractor, and its Zhengzhou factory assembles more iPhones than anywhere else in the world.
Many workers fled the factory in late October amid rising Covid cases and allegations of staff mistreatment. Their escape was captured on social media as they returned by truck to their hometowns elsewhere in China’s central province.
Foxconn then attempted to convince workers to stay and to recruit new staff by offering higher salaries and bonuses.
The firm has since enacted so-called closed loop operations at the plant – keeping it isolated from the wider city of Zhengzhou because of a Covid outbreak there.
Earlier this month Apple said it expected lower shipments of iPhone 14 models because of the disruption to production in Zhengzhou.