Staff at the Ministry of Fisheries have suspended plans for two weeks of industrial action.
The Public Service Association and the National Union of Public Employees, which represent the 220 staff involved, say they have reached an agreement with the ministry.
They say the breakthrough follows talks lasting two-and-a-half days over a new collective agreement.
Had the talks failed, staff were scheduled to begin industrial action on Monday, including a series of 24-hour strikes.
The workers include fisheries officers, investigators, scientists and administrators.
Unions say their members must vote in favour of the settlement before industrial action can be ruled out.