Notification of industrial action is expected to be served on Diamond manufacturer Element 6 today following overwhelming staff support for the move.
The two day ballot resulted in 99 percent of SIPTU staff and 100 percent of TEEU staff vote for industrial action in the dispute over the redundancy deal on offer as part of the Shannon Sustainability Plan
Workers are angry at the terms of the package and talks between unions and management on the issue broke down last week
Mayor of Shannon Sean McLoughlin has expressed his disappointment at the decision to back industrial action.
Councillor McLoughlin is appealing to all sides to try and seek a resolution