Mass. Gen. Laws ch. 112 § 12I
A physician or any other person who is a member of or associated with the medical staff of a hospital or other health facility or any employee of a hospital or other health facility in which an abortion or any sterilization procedure is scheduled and who shall state in writing an objection to such abortion or sterilization procedure on moral or religious grounds, shall not be required to participate in the medical procedures which result in such abortion or sterilization, and the refusal of any such person to participate therein shall not form the basis for any claim of damages on account of such refusal or for any disciplinary or recriminatory action against such person. The refusal of any person who has made application to a medical, premedical, nursing, social work, or psychology program in the commonwealth to agree to counsel, suggest, recommend, assist, or in any way participate in the performance of an abortion or sterilization contrary to his religious beliefs or moral convictions shall not form the basis for any discriminatory action against such person. Conscientious objection to abortion shall not be grounds for dismissal, suspension, demotion, failure to promote, discrimination in hiring, withholding of pay or refusal to grant financial assistance under any state aided project, or used in any way to the detriment of the individual in any hospital, clinic, medical, premedical, nursing, social work, or psychology school or state aided program or institution which is supported in whole or in part by the commonwealth.
Mass. Gen. Laws ch. 112, § 12I