More than 120 helicopter mechanics and supply technicians employed by Amentum at Naval Station Mayport in Jacksonville, Florida, have voted to join the International Association of Machinists and Aerospace Workers (IAM) Union. This marks the first time IAM will represent a group at this military base.
The decision came after a mail-in ballot election held on December 30, with workers voting in favor of union representation by a two-to-one margin. The newly organized employees provide essential maintenance and supply support for military helicopter operations at the installation.
“This was a campaign that required patience, education, and a strong core group of workers,” said IAM Assistant Organizing Coordinator Joe Solis. “The employees stayed engaged and committed, even when delays tested everyone’s resolve.”
The organizing campaign began with outreach from IAM through established networks, followed by direct discussions and meetings to inform workers about union representation benefits. The process faced an unexpected delay when the 2025 federal government shutdown postponed the election.
“That delay made things more challenging,” said Solis. “But the workers stayed united and were excited just to finally see the process move forward.”
During the campaign period, Amentum hired around 30 additional employees. Despite challenges brought on by the government shutdown, organizers expressed confidence in their efforts due to continued worker engagement.
This development is significant as it establishes an IAM presence at Naval Station Mayport for the first time.
“When you’re the first union on a military installation, it’s harder,” Solis explained. “You have to build trust from the ground up and spend a lot of time educating workers about what the union does and how it benefits them.”
Organizers highlighted IAM’s experience representing Service Contract Act (SCA) workers across sectors such as defense, aerospace, and aviation.
“We explained that IAM Union are the experts in the service contract industry,” said Solis. “We’ve delivered strong contracts for thousands of workers doing this kind of work across the country.”
Preparations are underway for bargaining an initial contract between IAM representatives and Amentum management. Negotiations are expected to begin soon.
“This win shows what’s possible when workers stay engaged and the Organizing Department works closely with the territories and districts,” said Solis. “That partnership is critical, especially during challenges like a government shutdown.”
