If they do hit the picket line, it would be the first strike in the utility company's history.
Hundreds of workers with the IBEW Local 614 union gathered in Plymouth Meeting Saturday morning to begin discussions.
Union leaders say 94 percent of workers voted in favor of a strike.
They've been working without a new contract since April 1.
They claim PECO has not made any serious offers on wages or benefits.
PECO says it is committed to negotiating in good faith to reach a fair agreement.