1,700 hundred Fairpoint workers in Northern New England are on strike.
Fairpoint provides phone and internet service to thousands of customers in Maine, New Hampshire and Vermont.
They walked off the job at midnight Friday. The union workers say Fairpoint isn't negotiating in good faith.
Fairpoint says it wants union workers to make concessions on health benefits and pensions to be in line with industry standards and allow the company to stay competitive.
Employees say they agreed to $200 million in concessions, but the company wants $700 million.
Workers say every offer they have made has been rejected out of hand and they felt like a strike was the only option left on the table.
Fairpoint says it has contingency plans in place to ensure customers in Northern New England can maintain their phone and internet service during the labor dispute.