ZHENGZHOU, China—An employee at Foxconn’s electronics manufacturing operation here committed suicide by jumping off a building at the complex. The death comes after Foxconn had worked to improve labor conditions following a series of suicides in 2010 and 2011, mostly at the company’s Shenzhen factory.

FLINT, MI—GM’s truck assembly plant here shut down March 18 after an employee committed suicide there earlier.

CHENGDU, China—A 23-year-old Foxconn worker jumped to his death at the company’s assembly plant here on Wednesday—the latest in a series of suicides at the Apple supplier’s factory that has promted concern among workers’ rights groups worldwide.