The UAW strike's bill for Detroit

The United Auto Workers have gone on strike against Detroit's 'Big Three', General Motors, Ford and Stellantis, in a dispute that could reset labour costs across the industry. The union wants wage rises of forty per cent, an end to tiered pay and the return of defined-benefit pensions. Carmakers have been making healthy profits, and the UAW means to claim a share of them.

A strike built to escalate

The walkout began at midnight as the contracts expired, and it is the first time the union has struck all three companies at once. Instead of calling out its whole membership, the UAW has pulled about 12,700 workers from three plants: a GM factory in Missouri, a Ford plant near Detroit and a Stellantis complex in Toledo. The tactic conserves the strike fund, keeps managers guessing about which plants come next and can be widened at short notice. Shawn Fain, elected union president this year on a promise of confrontation, has made clear that more walkouts are possible.

Clawing back 2007 and 2009

The demands aim to reverse concessions made when Detroit nearly collapsed. The 2007 contracts introduced lower pay scales for new hires and moved them off traditional pensions, and in 2009 GM and Chrysler, now part of Stellantis, went through government-backed bankruptcies that cost workers further benefits. Since then the companies have recovered and returned billions to shareholders, while inflation has eroded the value of a contract signed in 2019. Their latest offers of around 20 per cent over the life of a deal are about half the union's demand.

How the bill compounds

The headline percentages understate the long-term cost. A pay rise is permanent, so each increase lifts the base for every later one and for overtime, holiday pay and pension accruals linked to wages. A deal that also collapses the tiers moves thousands of newer workers onto the top rate much faster than under the current system, which raises the average wage by more than the headline figure. Restoring a cost-of-living adjustment would add an open-ended element, since pay would rise automatically with inflation after the contract's fixed increases.

Pensions are the most expensive demand of all. A defined-benefit promise commits a company to paying retirees for decades, with the investment risk left on its own balance sheet. The carmakers spent the years after 2009 shrinking exactly that kind of liability, and restoring it would reverse a large part of the restructuring that allowed them to recover. Retiree health care, which the union also wants extended to workers hired since 2007, carries a similar long-tail risk.

Electric cars, thin margins

The strike comes at the worst moment for Detroit's old carmakers. They are already spending tens of billions on electric vehicle platforms that lose money and face tough competition from Tesla and Chinese rivals. Accepting a big rise in legacy costs would dent operating margins for years, just as the costly switch to electric cars speeds up.

The losses are explicit. Ford reports its electric business separately and expects it to lose about $4.5 billion this year. Tesla, whose American plants are not unionised, started a price war in January, and China's BYD sold more electric and plug-in hybrid cars than Tesla last year. The union also wants the new battery plants, many of them joint ventures with Korean partners, brought under the master agreement, which would carry legacy pay scales into the part of the business meant to be cheaper.

The transition is being paid for out of petrol profits. Pickups and large SUVs generate most of Detroit's earnings, and those earnings fund battery plants, new platforms and the software engineers needed to compete with Tesla. Every dollar diverted into a pay settlement is a dollar not spent catching up. The tax credits in last year's Inflation Reduction Act reward assembling electric cars and batteries in North America, but they subsidise buyers and battery output rather than the wage bill.

Who gains from a long stoppage

A short strike is survivable. Dealers hold stock, and the union has so far spared the plants that build full-size pickups, the companies' biggest earners, keeping that threat in reserve. The 2019 strike against GM alone lasted about six weeks and cost the company billions of dollars in lost output. Parts suppliers, many on thin margins, feel the damage faster because their orders stop the moment assembly lines do. Toyota, Honda and Hyundai, whose American plants are non-union, gain share while Detroit's lots empty, and every rise in Detroit's labour costs widens their advantage.

Longer stoppages are not unknown. In 1970 the union kept GM shut for more than two months, and the company's output and profits for that year suffered accordingly. Buyers have less cushion this time than the dealers' stocks suggest, because inventories were only beginning to recover from the shortage of chips that crippled production in 2021 and 2022. A long strike would push up new and used car prices, which fed heavily into inflation two years ago.

The economic statistics will register the strike with a lag. The monthly payroll survey counts workers as employed if they were paid for any part of the pay period that includes the twelfth of the month, so a walkout that started on the 15th leaves the September figures untouched. If it lasts, the October report will show a drop in manufacturing jobs, and the Federal Reserve will have to look through it.

The strongest counterargument is that labour is a small fraction of what it costs to build and sell a vehicle, and that companies earning healthy profits can afford a better deal. That holds for this year's accounts. The difficulty is that pensions and rigid pay scales are commitments lasting decades, while today's profits come from petrol-powered trucks whose market the carmakers themselves plan to shrink. The signals to watch are whether the union extends the strike to the pickup plants, and whether any settlement restores cost-of-living adjustments that would tie wages to inflation indefinitely.

A rich settlement would lock Detroit into rigid labour costs just when it needs spare cash to fund electric cars, and Tesla and the Chinese makers will be the ones to benefit. The likeliest outcome is a deal well above the companies' first offers, reached after weeks rather than months, whose cost shows up in thinner margins and slower electric-vehicle spending over the life of the contract.