Welch, the son of a railway worker and a homemaker, rose from his working class roots to ultimately expand GE beyond household appliances, healthcare and aeronautics into finance with GE Capital and media through NBCUniversal. The company's market capitalization grew from $12 billion when he took over in 1981 to $410 billion on his departure. Welch's hard-hitting reforms at GE came at a cost, however, and he was criticized for firing thousands of employees.
"His no nonsense leadership style gave him a reputation of being hard, even ruthless, but also fair when making business decisions," Welch's GE biography said. As the layoffs mounted, he became known as "Neutron Jack" due to his reputation for eliminating workers and jobs without demolishing the buildings they worked in. The hard-charging executive said in a 2005 television interview that he hated the nickname.
President Donald Trump used the moniker to pay tribute to Welch. "There was no corporate leader like 'neutron' Jack," Trump tweeted. "He was my friend and supporter. We made wonderful deals together. He will never be forgotten," the president said. Welch was an ardent supporter of the Republican party.
Born in Massachusetts, Welch earned a doctorate in 1960 and joined GE the same year as a chemical engineer in its plastics division, rising through the ranks to become vice chairman in 1979, then CEO two years later. Business analysts and investors praised on him for molding GE, which traces its roots to 1892, into a more formidable and diversified company.
For a brief period it was the world's biggest corporation. But his reign ended in a bitter failure when European regulators blocked GE's merger with Honeywell, another US industrial conglomerate. Welch handed over to his successor Jeff Immelt a few days before the September 11, 2001 attacks in the United States. Immelt's reign was also marked by the bursting of the Internet bubble and the global financial crisis, forcing him to sell off NBCUniversal to cable operator Comcast, while GE Capital, caught up in a subprime mortgage crisis, had to liquidate one asset after another. Welch's high-flying business career enabled him to become immensely wealthy.