The report on supplier responsibility from Apple indicates progress on working conditions and excessive overtime requirements at the tech giant's Chinese suppliers, including its largest supplier, Foxconn. But the report also revealed one supplier was employing child workers.

Marketplace's Rob Schmitz was offered a rare glimpse into the world of Apple's usually secret supply chain. Here's the story of the people who help run Apple's Chinese producer, Foxconn.

What's life like for the thousands of workers who assemble your Apple products? Marketplace’s Rob Schmitz gained rare access to Apple’s production line at a Foxconn plant in China.

China correspondent Rob Schmitz is the second journalist to ever visit an Apple production line at Foxconn, where many of the world's electronics are manufactured. He describes what he saw and learned.