When negotiations began in July, Mr. Fain initially demanded a 40 percent increase in wages, noting that workers’ pay has not kept up with inflation over the last 15 years and that the chief executives of the three companies have seen pay increases of roughly that magnitude.
The automakers, which have made near-record profits over the last 10 years, have all offered increases of slightly more than 20 percent over four years. Company executives have said anything more would threaten their ability to compete with nonunion companies like Tesla and invest in new electric vehicle models and battery factories.
The union also wants to end a wage system in which newly hired workers earn just over half the top U.A.W. wage, $32 an hour now, and need to work for eight years to reach the maximum. It is also seeking cost-of-living adjustments if inflation flares, pensions for a greater number of workers, company-paid retirement health care, shorter working hours and the right to strike in response to plant closings.
In separate statements, Ford and Stellantis have said they agreed to provide cost-of-living increases, shorten the time it takes for employees to reach the top wage, and several other measures the union has sought.