Supplier Responsibility and Supply Chain Management

http://www.apple.com/supplier-responsibility/

While I was researching the work quality at Apple, they claim to have a strict "Workers' Rights are Human Rights" policy, stating that excessive work hours, underage labor, and bonded labor are not acceptable for their company. They also state that they are going deep within the supply chain to make sure their materials are acceptable. They even give a yearly progress report to the public, telling how they have lived up to their code of conduct. This makes me wonder whether or not these progress reports are accurate