PORTLAND, Maine (AP) The University of Maine System has announced a projected $2.5 million in savings per year through a change in health insurance for retired employees that will expand coverage and add flexibility.

The Portland Press Herald reports that former employees and lawmakers have raised concerns about the proposed changes that were planned without input from retirees or unions.

System Chancellor Dannel Malloy said Wednesday in a letter to state lawmakers that the change from a group benefits plan to a Medicare exchange will not result in retirees or their spouses losing coverage.

Under the new system, retirees will have to file for reimbursement after paying upfront for medical expenses.