How much per piece?

No workers were able to tell investigators how much money they received for each piece they completed. Workers told investigators that they made between 80 and 90 RMB per day (US $12-14). The factory director promised the investigators that if they stayed and worked, they could make 2,500 RMB per month (US $390). The finishing workshop also operates on a piece-rate wage system. The entire workshop only consists of three laborers. For every hat they manufacture, workers can earn 0.2 RMB (US $.03). They must finish one hat every two minutes. Investigators were told that workers can produce between 400 to 500 hats in one day.
Source China Labour Watch report, November 2011
(c)2014 - The Fusion Works