Cora Lewis:

It was the free pizza that led Andy Stern to his first union meeting, back when he was working as a welfare caseworker in the 1970’s. He rose fast through the ranks, eventually claiming one of the most powerful positions in the labor movement: President of the 2.2-million member Service Employees International Union.
 Since retiring from the SEIU in 2010, he’s spent his time researching the effects of technology on American jobs, and thinking about the kind of policies needed to help workers cope with the changing labor market. In his new book with Lee Kravitz, Raising the Floor, Stern argues that a universal basic income (or UBI) — a guaranteed salary for all, without work requirements — will become a necessity as automation and on-demand labor take over wider swaths of the economy.