Why the UAW Strike Targeted Tiered Employment and Temporary Workers

The United Auto Workers (UAW) strike against Ford, General Motors and Stellantis in 2023 centered on unequal wages, temporary employment and job security. Workers challenged a system that allowed employees performing similar jobs to receive different compensation based on hiring dates and employment classifications. The six-week strike secured 25% base wage increases, reduced progression to top pay from eight years to three, and established faster pathways to permanent employment. By 2026, these changes had reshaped labor conditions at the Detroit Three automakers, although disputes over retirement benefits, layoffs and future manufacturing investments continued.

Why Did the UAW Strike Against Ford, GM and Stellantis?

The UAW launched its Stand Up Strike on September 15, 2023, after failing to reach new labor agreements with the three major Detroit automakers before their previous contracts expired.

Led by union president Shawn Fain, the strike initially involved approximately 13,000 workers at selected manufacturing plants. Additional facilities joined the action as negotiations progressed.

The union demanded higher wages, the elimination of divisive compensation tiers, stronger retirement benefits and improved employment security.

Two particularly important demands involved the treatment of lower-paid employees hired after 2007 and temporary workers who lacked the benefits and protections available to permanent employees.

The dispute reflected longstanding disagreements over concessions introduced during the financial difficulties facing American automakers in the late 2000s.

What Was the Tiered Employment System?

The tiered employment system established different compensation arrangements for workers depending on when they were hired and the type of position they held.

In 2007, the UAW agreed to a two-tier wage structure as Detroit automakers struggled with financial pressure, rising healthcare expenses and competition from foreign manufacturers.

Employees hired before the changes generally retained more favorable wages and retirement arrangements. Newer employees entered lower compensation structures and often received different retirement benefits.

Under the agreements preceding the 2023 strike, newly hired permanent production workers typically required eight years to reach the highest hourly wage rate.

Although the system helped manufacturers control labor expenses, it created substantial differences between employees performing comparable work.

Why Wage Tiers Became Controversial

Workers argued that compensation should reflect job responsibilities rather than hiring dates.

Under the previous agreements, some newer production employees earned approximately $18 an hour, while experienced workers at the top of the pay scale earned more than $32.

The UAW maintained that these differences weakened workplace solidarity and limited the earning potential of employees who had joined the companies after the financial crisis.

Automakers defended the structures as part of a broader effort to maintain competitiveness and manage long-term labor costs.

Why Temporary Workers Were Central to the Strike

Temporary workers faced additional disadvantages because their employment classifications often provided lower wages, fewer benefits and less predictable job security.

Manufacturers traditionally hired temporary employees to manage fluctuations in production, replace absent workers and support periods of increased demand.

However, the UAW argued that temporary classifications were increasingly used for ongoing production work rather than genuinely short-term staffing needs.

Some temporary employees remained in their positions for extended periods without obtaining permanent status.

Before the strike, temporary workers at certain Detroit Three facilities earned approximately $16 to $17 an hour. Access to profit-sharing, paid leave and other benefits was also more limited than for permanent employees.

The union sought to prevent companies from relying indefinitely on lower-paid temporary labor to perform regular manufacturing duties.

What Did the UAW Demand in 2023?

The union initially proposed substantial changes to compensation, employment classifications and working conditions.

• Higher wages: General wage increases totaling approximately 40% over the contract period.
• Ending wage tiers: Removing separate compensation structures for employees performing comparable jobs.
• Faster wage progression: Allowing newly hired workers to reach top pay after 90 days instead of eight years.
• Permanent employment: Establishing stronger and faster conversion rights for temporary employees.
• Retirement benefits: Restoring traditional pensions and retiree healthcare protections.
• Job security: Strengthening protections against plant closures, outsourcing and employment losses.

The automakers opposed several proposals because of concerns about labor expenses, future investments and international competition.

How the 2023 UAW Strike Ended

The UAW used a targeted strike strategy rather than ordering all members to walk out simultaneously. Work stoppages expanded to selected assembly plants and parts distribution facilities as negotiations continued.

Ford reached a tentative agreement on October 25, 2023. Stellantis followed on October 28, and General Motors reached an agreement on October 30.

By November 20, union members had ratified all three contracts, formally ending the collective bargaining dispute.

The agreements were scheduled to remain in effect through April 30, 2028.

What Did the New UAW Contracts Achieve?

25% Base Wage Increases

Ford, GM and Stellantis agreed to general wage increases totaling 25% over the contract period, including an immediate 11% increase upon ratification.

The agreements also restored cost-of-living adjustments, providing additional compensation tied to inflation.

According to the UAW, top production wages were projected to exceed $40 an hour by 2028, while certain lower-paid employees would receive substantially larger percentage increases because of changes to their classifications and wage progression.

Three-Year Progression to Top Pay

The agreements shortened the time required for newly hired permanent production employees to reach the top wage rate from eight years to three.

This represented a significant improvement for newer workers, although it did not meet the union's original demand for a 90-day progression period.

Faster Conversion for Temporary Workers

The contracts introduced stronger conversion provisions for qualifying temporary employees.

Under Ford's 2023 agreement, existing temporary workers with at least three months of continuous service became eligible for conversion to regular full-time employment following ratification.

Workers who had not reached that threshold could qualify after nine months of continuous employment, or earlier where contractual staffing provisions applied.

General Motors introduced similar conversion provisions for qualifying full-time temporary workers. However, its agreement distinguished between full-time and part-time temporary employees, meaning the conditions were not identical for every worker.

These changes reduced the prolonged use of temporary employment arrangements, while preserving specific eligibility requirements within each company's labor contract.

Retirement and Job Security Improvements

The agreements strengthened employer retirement contributions and provided improvements for certain existing pension beneficiaries.

However, traditional defined-benefit pensions and retiree healthcare were not universally restored for newer employees.

The contracts also expanded job-security provisions, including rights related to plant closures and commitments concerning future manufacturing investments.

How the UAW Strike Affected the US Auto Industry

The strike temporarily reduced vehicle production and disrupted supply chains, creating financial pressure on automakers and suppliers.

An April 2024 Federal Reserve analysis estimated that the work stoppages reduced annualized US GDP growth by approximately 0.1 percentage point in the third quarter of 2023 and 0.5 percentage point in the fourth quarter.

The analysis found that the strike had a more noticeable effect on vehicle production than on sales or prices, partly because manufacturers had rebuilt inventories following earlier supply-chain disruptions.

The resulting labor agreements also influenced compensation decisions outside the Detroit Three.

Nonunion manufacturers, including Toyota, Honda and Hyundai, subsequently announced wage increases for employees at US manufacturing facilities.

Although each company's decisions reflected its own operating conditions, the new UAW contracts increased competitive pressure in automotive labor markets.

What Changed for Temporary Workers by 2026?

By 2026, the new contract provisions had produced measurable changes in employment classifications.

According to a fall 2026 report from UAW Local 276, General Motors had converted 3,295 temporary employees to permanent status nationally under the 2023 labor agreement.

The union also reported continued discussions concerning staffing levels, temporary layoffs, employee recall rights and job placement.

These developments indicate that the conversion provisions were being implemented, although the available figures do not establish that every temporary worker had obtained permanent employment.

Questions surrounding layoffs, employment classifications and the enforcement of contractual protections remained relevant across the industry.

Stellantis' Belvidere Investment and Job Security Dispute

One of the most prominent post-strike disputes involved Stellantis' Belvidere Assembly Plant in Illinois, which had been idled in February 2023.

Under the 2023 UAW agreement, Stellantis committed to reopening the facility and pursuing additional manufacturing investments.

However, delays to the company's investment plans prompted complaints from the union, which argued that Stellantis had failed to meet contractual commitments.

In August 2026, Stellantis announced plans to increase its investment in Belvidere to more than $800 million and use the facility for its new STLA One vehicle platform.

The plan included production of the next-generation Jeep Cherokee, although the facility's reopening and production timetable remained subject to further implementation.

The dispute demonstrated that negotiated investment commitments can remain contentious even after a major strike has ended.

Electric Vehicles and the Future of Automotive Employment

The transition toward electric vehicles has created additional challenges for the US automotive workforce.

Electric vehicle manufacturing requires different components and production processes, potentially changing staffing requirements at vehicle assembly, engine and battery facilities.

The UAW has sought to extend collective bargaining protections to emerging battery operations and secure commitments that future manufacturing investments support union employment.

The 2023 contracts created opportunities for certain battery and electric vehicle facilities to become covered by union agreements, but did not automatically guarantee identical protections across every joint venture.

By 2026, changing market conditions and federal electric vehicle policies had contributed to the cancellation or delay of several planned US automotive investments.

These developments increased uncertainty about future employment growth, particularly in communities expecting new battery factories or electric vehicle production lines.

Why the UAW Agreements Still Matter in 2026

The 2023 strike changed compensation standards across the Detroit Three and demonstrated the importance of employment classifications in collective bargaining.

For newer permanent employees, shorter wage progression improved access to higher pay. For qualifying temporary employees, stronger conversion provisions offered greater opportunities for stable employment and contractual benefits.

Nevertheless, the agreements did not resolve every longstanding issue.

Retirement benefit differences, layoffs, future investment commitments and the changing structure of automotive manufacturing remain significant concerns.

As the contracts approach their April 2028 expiration, the implementation of these provisions will influence future negotiations between the UAW and the Detroit Three.

Conclusion

The UAW strike targeted tiered employment and temporary workers because decades of different compensation arrangements had created substantial inequalities among employees performing similar manufacturing jobs.

The 2023 agreements delivered major improvements, including 25% general wage increases, three-year progression to top pay, stronger protections for qualifying temporary workers and additional job-security commitments.

By 2026, thousands of temporary employees had moved into permanent positions, while investment disputes and changes in automotive production continued to test the effectiveness of the contracts.

The strike's lasting significance lies in how it reshaped wage standards and employment protections while leaving unresolved questions about retirement equality, manufacturing investment and the future of unionized automotive jobs.