Today, there are millions of electronics workers around the world – especially in places where labor laws are even less strict than those in the U.S.

Since the 1980s, the electronics industry largely has moved overseas in search of cheaper labor. Reporter Sandra Bartlett went to South Korea, where one of the largest electronics companies, Samsung, is headquartered. There, a movement has sprung up to investigate the illnesses and deaths among Samsung factory employees.

Last year, Samsung publicly apologized and promised to compensate sick workers and the families of those who died. But the company didn’t acknowledge that the work environment was responsible.

Samsung is keeping its manufacturing process a secret even as its expansion grows in new countries such as Vietnam.