excessive overtime, threw a spotlight on conditions inside the plants.
Last month, a riot broke out at a Foxconn plant assembling iPhones in the northern city of Taiyuan over living conditions inside Foxconn's on-site dormitories for migrant workers.
In response to the scrutiny, Foxconn plans to cut overtime to less than nine hours a week from the current 20.
It defended its intern programme on Tuesday, saying they made up only 2.7 percent of its workforce in China. Internships could be long-term or short-term, carried out in cooperation with vocational schools and other educational institutions.
The average internship lasted about three-and-a-half months, it said.