Harvard Pilgrim Health Care, the Wellesley-based health insurer, confirmed Thursday that it laid off 65 workers, reducing its three-state workforce by about 6.5 percent, to 1,265.
Sixty-two of the job cuts were in Massachusetts, said Joan Fallon, a spokeswoman for the insurance company.
In addition, Harvard Pilgrim will eliminate 35 open positions but will add 12 new ones, Fallon said.
The insurer plans to expand into a fourth state, Connecticut, next year.
In a statement, Harvard Pilgrim said the cutback was “part of a strategic plan to align . . . organizational structure with the changing health care environment.” It said the carrier will provide severance and support services for employees who were laid off.
In addition to Massachusetts, Harvard Pilgrim has operations in Maine and New Hampshire.