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). This marks the first time IAM will represent a group at this military base.
The decision was made through a mail-in ballot election on December 30, with employees voting in favor of union representation by a two-to-one margin. The workers provide essential maintenance and supply support for military helicopter operations at the naval station.
“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.”
IAM organizers began their efforts by reaching out to workers through existing networks and conducting direct conversations and meetings about union benefits. The process faced challenges after the petition for representation was filed, as the 2025 federal government shutdown delayed 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 these changes and delays caused by the government shutdown, organizers maintained confidence in their core organizing committee.
This victory 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 nationwide, especially in defense-related industries such as 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 now underway to begin negotiations for an initial contract between IAM representatives and Amentum management. These talks are expected to start 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.”
