Striking Verizon landline workers say they laid the foundation for the company's booming wireless business and shouldn't be expected to give up contract benefits just because they work on a less profitable side of the business.

But management says the company has to change to stay competitive and the 45,000 landline workers can't expect to be paid the way they were when the phone company was a monopoly.

"It's no secret that the wireline business has experienced a 10-year decline in our customer base and in profitability," said CEO Lowell McAdam. "... We have arrived at the point where we must make additional hard decisions to address customer needs and the overall operating costs of the business."

A union spokeswoman said the company is seeking about $20,000 a year per worker in annual givebacks.

Thousands of strikers took to picket lines from Massachusetts to Virginia on Monday, the second day of their strike. Managers replaced many strikers and Verizon said there was only minimal impact on service. It said there may be slightly longer hold times for customer service and longer waits for repair.

However, the company also alleged a dozen acts of sabotage that affected phone, Internet and TV service in Maryland, Massachusetts, New Jersey and New York.

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