Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 156B, § 17

The power to make, amend or repeal by-laws shall be in the stockholders; provided that if authorized by the articles of organization, the by-laws may provide that the directors may also make, amend or repeal the by-laws in whole or in part, except with respect to any provision thereof which by law, the articles of organization or the by-laws requires action by the stockholders. Not later than the time of giving notice of the meeting of stockholders next following the making, amending or repealing by the directors of any by-law, notice thereof stating the substance of such change shall be given to all stockholders entitled to vote on amending the by-laws. Any by-law adopted by the directors may be amended or repealed by the stockholders.