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.

Ad Loading...

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.”

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.

Ad Loading...

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.

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

Gray Volvo tractor pulling trailer on open highway
Fuel Smartsby Deborah LockridgeMay 1, 2026

New High-Horsepower Natural Gas Engine Could Expand Fleet Options

Westport and Volvo are demonstrating a 500-hp truck with diesel-like efficiency — one that also offers what Westport says is a better pathway to using hydrogen fuel in trucks.

Read More →
Aurora Innovation self-driving truck.
Equipmentby News/Media ReleaseApril 30, 2026

Hirschbach Announces Plan to Deploy 500 Aurora Autonomous Trucks

Hirschbach and Aurora Innovation have inked a non-binding deal outlining a path to deploy 500 Aurora Driver-powered trucks into fleet operations.

Read More →
Bosch-Kodiak self-driving truck partnership.
Equipmentby News/Media ReleaseApril 30, 2026

Bosch, Kodiak AI Advance Toward Scaled Production of Autonomous Truck Hardware

New sensor integrations and component validation signal a shift from strategy to execution as Kodiak and Bosch push toward high-volume driverless truck deployment.

Read More →
Ad Loading...
Great American Trucks: REO
Equipmentby Jack RobertsApril 29, 2026

Great American Trucks: REO

The evolution of the modern truck was a long, slow affair. But perhaps no other company did more to establish the template for what a modern truck should be, and how it should perform, than REO.

Read More →
Western Star's Star Nation customer event.
Equipmentby News/Media ReleaseApril 27, 2026

Western Star Doubles Down on Driver Pride With 2026 Star Nation Experience

Western Star has expanded its operator-focused Star Nation competition and outreach to spotlight skill, attract new drivers, and strengthen industry ties.

Read More →
HDT Spotlight: Volvo VNR test drive.
Equipmentby Jack RobertsApril 23, 2026

Is the All-New VNR Volvo's Safest Truck Ever?

The all-new Volvo VNR is jam-packed with advanced safety features. Join HDT for a first-hand look at how Volvo is keeping drivers safer and productive on the road.

Read More →
Ad Loading...
2026 Volvo VNR
Equipmentby Jack RobertsApril 22, 2026

Volvo Redesigns the VNR With Drivers and Tight Turns in Mind

At Volvo’s New River Valley customer center, the all-new VNR proves that maneuverability, safety, and driver confidence can coexist in a regional-haul workhorse.

Read More →
Great Dane trailer.
Equipmentby News/Media ReleaseApril 21, 2026

FTR: Trailer Orders Jump in March, but Demand Still Lags

March trailer orders posted an unexpected monthly jump, but demand still trails historical norms as fleets prioritize power units over trailing equipment.

Read More →
Humble cabless autonomous freight hauler.
Equipmentby News/Media ReleaseApril 21, 2026

Autonomous Start-Up Humble Announces Cabless Autonomous Electric Hauler

A new autonomous truck startup company is targeting yard, port, and short-haul freight with a lighter, fully autonomous platform designed for dock-to-dock moves.

Read More →
Ad Loading...
Circles with trucks demonstrating sustainable features and Top Green Fleets logo
Fuel Smartsby Deborah LockridgeApril 16, 2026

Top Green Fleets of 2026: Nomination Deadline Extended

Is your company a leader in sustainability efforts among trucking fleets? If so, Heavy Duty Trucking's editors want to hear from you.

Read More →