Pegatron, a manufacturer of Apple products, is facing accusations of forced overtime, low wages and using underage workers, according to the China Labor Watch advocacy group as reported by Bloomberg.
The report lists 86 labor rights violations, a combination of 36 unlawful and 60 ethical violations, across three factories this year.
"Apple has not lived up to its own standards," CLW executive director Li Qiang said in the statement. "This will lead to Apple's suppliers abusing labor in order to strengthen their position for receiving orders. In this way, Apple is worsening conditions for workers, not improving them."
Apple representative Carolyn Wu has responded to the claims stating the company had no knowledge of Pegatron's violations, while its recently independently-led survey in June found no serious breaches. CLW's report is based on violations between March and July of this year.
"We will investigate these new claims thoroughly, ensure that corrective actions are taken where needed and report any violations of our code of conduct," Wu said. "We will not tolerate deviations from our code."
Apple recently joined the Fair Labor Association following reports of poor working conditions within its major manufacturing partner Foxconn. Foxconn faced investigation from Nintendo late last year following a violation of Chinese law by hiring underage interns as young as 14 years old.