Foxconn (part of Hon Hai)...main supplier of Apple...said...a worker at a Chinese plant jumped from his apartment...the first suicide since the company agreed with its U.S. client to improve work conditions...The 23 year-old worker fell to his death from his apartment located outside the plant in the southwestern city of Chengdu, according to a statement by Foxconn...Apple and Foxconn reached an agreement in March to improve conditions for the 1.2 million workers...According to the agreement, Foxconn would hire tens of thousands of new workers to reduce overtime work, improve safety protocols and upgrade housing and other amenities...[also refers to Nokia, Sony Ericsson]