Watchdog group SumOfUs has launched a new petition asking Apple to prove that workers at Foxconn factories in China weren’t subject to illegal overtime to make the iPad 3.

Specifically, they’re looking for Apple to turn over individual worker hours from November 2011-February 2012 to prove they’re not violating China’s labor laws which prohibit more than 36 hours of overtime per month.

Cult of Mac talked to SumOfUs founder Taren Stinebrickner-Kauffman about what the group hopes to achieve with this latest petition, launched the morning of the iPad event as of this writing reached 41,500 of its 50,000 signature goal.

A small but determined group of protesters from consumer watchdog group SumOfUs gathered at Apple headquarters in Cupertino and headed inside the shareholder’s meeting to ask questions about working conditions at Foxconn.

It seems that lengthy report looking into the poor working conditions in Chinese factories assembling Apple products is going to haunt the Cupertino company for some time yet. The latest backlash comes from consumer group SumOfUs, which has launched a petition calling for Apple to “stop worker abuse,” with over 35,000 signatures collected in just 24 hours.