Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 94, § 119

An official establishment or a person engaged in the business of slaughtering livestock or poultry or in the business of the preparation of such products shall be under the supervision of the department and subject to the inspection required by said department.

The commissioner may issue orders and said department shall establish, and may from time to time amend, modify, repeal or suspend, rules and regulations, including uniform minimum requirements for the maintenance and operation of said establishments and to otherwise implement the provisions of sections one hundred and eighteen to one hundred and twenty-seven, inclusive.

If any establishment licensed under section one hundred and twenty is deemed by the commissioner to be operated or maintained in an unsanitary manner, or in violation of any of said rules and regulations, or not properly constructed or equipped for said business of slaughtering or preparation, said commissioner shall close such establishment until such time as it has been put in proper condition, and the department may also suspend the licenses issued under section one hundred and twenty if the required changes are not made within a reasonable time.