Ford Motor Co. Executive Chairman Bill Ford called on autoworkers to come together to end a monthlong strike that he says could cost the company the ability to invest in the future.

In a rare speech during contract talks in the company’s hometown of Dearborn, Michigan, Ford said high labor costs could limit spending to develop new vehicles and invest in factories. “It’s the absolute lifeblood of our company. And if we lose it, we will lose to the competition. America loses. Many jobs will be lost,” said the great grandson of company founder Henry Ford.

The company, he said, builds more vehicles in America and has more United Auto Workers employees than any company, which has increased its costs in a highly competitive industry.

Ford has 57,000 UAW workers compared with 46,000 at GM and 43,000 at Stellantis. “Many of our competitors moved jobs to Mexico as we added jobs here in the U.S.,” Ford said.