A tentative agreement is in place between the County of Essex and CUPE Local 2974.2.
County Warden Gary McNamara says the agreement is for EMS/Land Ambulance employees.
He say there are roughly 255 employees.
McNamara says it's the largest organized union membership within the corporation.
He says it's the first time in 12-years an agreement has been reached without arbitration.
No details of the deal have been released.
It's unknown when the membership will vote on the deal.