About 400 workers went on strike at 12:01 a.m. on Sunday.
Officials from AC Electric say the most recent contract expired on November 2 and at that time, they presented what they described as their 'best and final offer.'
But officials with the union, IBEW Local 210, say that offer is unacceptable.
Action News has learned the company suspended their benefits while they are on the picket line.
The utility says it has a contingency plan to prevent service from being impacted.