Former U.S. Labor Secretary Robert Reich warned Friday of the consequences of continuing the approach the U.S. economy has followed for the past 40 years, regarding workers’ wages and companies’ attitudes toward unions and unions.

“We are on the brink of the largest labor strike in America since the 1950s, with 340,000 UPS workers voting to strike if the terms of a new contract with the company cannot be reached by July 31,” Reich said in a tweet.

“It’s a big deal,” the former US labor secretary insisted.

“40 years of union-busting economics, an economy based on disproportionate preference for the upper end of the economic spectrum, made the rich richer while robbing the working class,” Reich added.

“But the (UPS) workers in many industries and others are fighting and they are organizing themselves to rebuild the strength of the workers and demand the dignity they deserve,” the former minister asserted.

“Never forget this,” Reich insisted. Employees outnumber billionaires and CEOs by a large margin.

“When workers unite, they win,” said the former US minister.

UPS is an American multinational company engaged in package delivery and supply chain management.