IBEW Local 614 -- which represents linemen, gas technicians, call center workers and mechanics -- says the strike is about fairness and pushing back against corporate greed.
"We didn't take this situation lightly. We know how important our work is... this is what happens when you don't share," said Lawrence Anastasi, President of IBEW Local 614.
The 1,600 PECO employees say it's time that PECO increase their wages, pay fair benefits and fund retirement.
The workers say that they have been on the job for nearly three months without a contract in place, as negotiations have gone well into their sixth month without a deal.
PECO says it has presented a strong, market-competitive compensation and benefits package.
They argue the offered salary increase of 20% over the life of the contract for linemen, and 16% for call center employees, is fair.
Negotiations are scheduled ahead of the strike date. If a deal isn't reached, this will be the first-ever PECO strike.
PECO says they've been working with a federal mediator, and the next meeting between the company and union is July 2.
While the contract dispute goes on, PECO says it has a plan to ensure there are no service disruptions.
"Unfortunately, if they do strike, we'll have resources available to be able to respond," said Nicole LeVine, Chief Operating Officer for PECO.