Cambridge Hospital nurses won a fight against the Cambridge Health Alliance when the Commonwealth Employment Relations Board ruled Friday that a unilateral cut in retiree health benefits was not warranted before completing collective bargaining with the Massachusetts Nurses Association unit, according to FierceHealthcare. The decision resolved an issue that has been brewing since June, when the alliance chopped nurse retiree health benefits by 40 percent and raised their required contributions to half of the insurance premium price. The cuts were made after the nurses union rejected management's final offer to rework benefits. FierceHealthcare