A standoff between Verizon Communications Inc. and about 45,000 of its employees entered a second day of strikes with no apparent end in sight.

On Monday morning, Candice Johnson, a spokeswoman for the Communications Workers of America. said Verizon had been canceling bargaining sessions on Saturday and Sunday as the company’s collective bargaining agreement with its eastern U.S. landline employees expired, setting the strike and picket lines into motion.

“Verizon workers are waiting for management to demonstrate that it’s ready to bargain,” Johnson said in a statement. “In fact, we’re looking for Verizon to stop canceling bargaining sessions that have been scheduled.”

Workers involved in the strike come from Verizon’s landline division in Massachusetts, Rhode Island, New York, New Jersey, Pennsylvania, Delaware, Maryland, Virginia, West Virginia and Washington, D.C., and are represented by two unions — the Communications Workers of America and the International Brotherhood of Electrical Workers unions. . .