Heavy Duty Trucking Logo
MenuMENU
SearchSEARCH

UAW Workers Ratify Mack 5-Year Agreement

Unionized Mack Trucks workers on Nov. 15 ratified a new five-year collective bargaining agreement after more than five weeks on strike.

November 16, 2023
UAW Workers Ratify Mack 5-Year Agreement

A Mack MD7 on the assembly line at the Macungie, Pennsylania, plant, taken before UAW workers went on strike.

Photo: Mack Trucks

3 min to read


Unionized Mack Trucks workers on Nov. 15 overwhelmingly ratified a new five-year collective bargaining agreement after more than five weeks on strike.

According to the United Auto Workers, after 39 days on strike, UAW members at Mack Trucks voted by 93% to ratify their new contract "with significant local improvements."

Ad Loading...

The master agreement is the same tentative agreement that workers rejected in early October, triggering the strike action. The agreement covers about 3,900 employees at Mack production facilities in Macungie (Lehigh Valley), Pennsylvania; Middletown, Pennsylvania; Hagerstown, Maryland; Baltimore, Maryland, and Jacksonville, Florida.

“The new agreement guarantees significant wage growth and delivers excellent benefits for our employees and their families,” said Mack President Stephen Roy in a news release announcing the ratification. “At the same time, it will safeguard our competitiveness and allow us to continue making the necessary investments in our people, plants and products.”

‘Last Best and Final Offer’

The UAW has been on strike at Mack facilities since Oct. 9 after 73% of members voted against ratification of a new five-year collective bargaining agreement that had been reached between Mack and the union’s negotiating team.

The two sides made little to no progress on the master agreement since the tentative contract was rejected.

On Nov. 7, UAW reported that its bargaining committee met with Mack to continue negotiations, but it said those negotiations had gone nowhere and that Mack told union negotiators that the Oct. 1 master agreement offer made by the company was their “last best and final offer.”

Ad Loading...

According to published reports, Local Union 677 leaders sent a letter to UAW members that negotiations were over and the company would start hiring replacement workers to restart production at the Macungie facility if the deal were not ratified. 

During the strike, Mack has been using about 500 non-union workers at its Hagerstown plant helping the company maintain support for the New River Valley plant. This group consists of non-union employees from Hagerstown and volunteers from other Volvo Group sites, as well as personnel from dealers, suppliers and a staffing service, the company explained on its UAW update website.

“Hagerstown supplies powertrains to other Volvo Group sites. We’re committed to protecting our business, and to minimizing the impact of the strike on our Volvo Trucks customers and fellow Volvo Group colleagues, as much as we can,” Mack said.

Why Was the Deal Initially Rejected?

“After almost two decades of concessionary contracts, the members are ready to make up lost ground,” said the UAW in a Mack negotiations update on Oct. 20.

In an Oct. 26 update, UAW said the two most important issues from the members were an increase in general wages and reinstating cost of living increases (aka COLA) back into the master agreement, which had been frozen in 2012.

Ad Loading...

According to Mack, the tentative agreement employees were voting on “includes the strong wage and benefit package the company offered at the master contract level and tentatively agreed to by the parties on Oct. 1, as well as a number of revised terms negotiated with the UAW on local agreements impacting LVO, Hagerstown, Baltimore and Jacksonville.”

Mack has said the tentative agreement that previously was agreed to by UAW negotiators would deliver a 10% general wage increase in year one for all employees, and a compounded 20% general wage increase over five years. It would also eliminate one wage progression step, giving all employees a faster path to full pay, and health insurance premiums would not increase through the term of the contract.

More Equipment

PlusAI, Traton Group autonomous truck partnership.
Equipmentby News/Media ReleaseFebruary 2, 2026

Traton, PlusAI Accelerate Factory-Built Autonomous Truck Launch in U.S. and Europe

The companies also said they plan to coordinate deployment planning across priority freight corridors and define routes and operational design domains for U.S. commercial service while laying the groundwork for expansion into key European markets.

Read More →
SponsoredFebruary 1, 2026

Stop Watching Footage, Start Driving Results

6 intelligent dashcam tactics to improve safety and boost ROI

Read More →
Volvo Trucks FH.
Equipmentby News/Media ReleaseJanuary 29, 2026

Volvo Repeats as Europe’s Heavy-Truck Market Leader in 2025

Volvo Trucks held onto the top spot in Europe’s heavy-duty truck market for the second straight year.

Read More →
Ad Loading...
Western Star's Star Nation 2025 in Bend, Oregon.
Equipmentby News/Media ReleaseJanuary 24, 2026

Western Star Opens Entries for 2026 Star Nation Experience

Previous Star Nation events have included driver challenges, exclusive access to Daimler Truck North America facilities and hands-on experiences with the latest Western Star X-Series lineup.

Read More →
Volvo VNL tractor.
EquipmentJanuary 22, 2026

Europe’s HayWay Group Enters U.S. Market with Order for 80 Volvo VNLs

HayWay Group comprises 19 companies operating across Europe and the U.S. and is now bringing its international logistics experience to North America.

Read More →
SponsoredJanuary 19, 2026

3 New Ways Fleet Software Pays: ROI opportunities for modern fleet managers

Safety, uptime, and insurance costs directly impact profitability. This eBook looks at how fleet software is evolving to deliver real ROI through proactive maintenance, AI-powered video telematics, and real-time driver coaching. Learn how fleets are reducing crashes, defending claims, and using integrated data to make smarter operational decisions.

Read More →
Ad Loading...
SponsoredJanuary 19, 2026

Basic Tracking vs Next Generation Fleet Technology

Fleet software is getting more sophisticated and effective than ever, tying big data models together to transform maintenance, safety, and the value of your existing tech stack. Fleet technology upgrades are undoubtedly an investment, but updated technology can offer a much higher return. Read how upgrading your fleet technology can increase the return on your investment.

Read More →
PlusAI-T2 Japan autonomous partnership.
Equipmentby News/Media ReleaseJanuary 16, 2026

PlusAI, T2 Partner to Bring Level 4 Autonomous Trucks to Japan

PlusAI is seeking to relieve Japan’s acute truck driver shortage by accelerating the adoption of autonomous trucks in the country.

Read More →
Three Freightliner fifth-generation Cascadia trucks are shown parked in a lineup, highlighting exterior design and aerodynamic styling.
Equipmentby News/Media ReleaseJanuary 13, 2026

Freightliner Cascadia Receives Prestigious Design Award

Freightliner’s fifth-generation Cascadia earned a 2025 Red Dot Design Award for its aerodynamic design and functional updates developed through close collaboration between designers and engineers.

Read More →
Ad Loading...
2026 Mack Anthem.
EquipmentJanuary 13, 2026

Mack Begins Redesigned Anthem Production

Mack’s new Anthem Class 8 tractor targets regional-haul fleets with enhanced maneuverability and fuel economy gains.

Read More →