Mass. Gen. Laws ch. 34A, § 18
(A.) Form of Government.
(ii) Each county operating under this section shall be governed by an elected board of commissioners and an appointed county manager and by such other officers and employees as may be duly appointed pursuant to this section, the general laws, or ordinance.
(i) The county manager shall be qualified by administrative and executive experience and ability to serve as the chief executive of the county. The county manager shall be appointed by a majority vote of the commissioners and shall serve at the pleasure of the commissioners. The county manager may be removed by majority vote of the commissioners subject to due notice and a public hearing. Such notice shall be in writing and shall be accompanied by a written bill of particular charges and complaints. The public hearing on these charges shall be held no less than 15 nor more than 30 days after personal service of notice and charges.
At the time of the county manager's appointment the manager need not be a resident of the county but must reside within the county after the manager's initial probationary period.
(iv) The executive power of county shall be exercised by the county manager. The county manager shall:
(v) The county manager:
(f) May, at his discretion, order any agency under his jurisdiction to undertake any task for any other agency on a temporary basis if he deems it necessary for the proper and efficient administration to do so.
(C.) Board of Commissioners.
(i) The legislative power of the county shall be vested in the board of commissioners. Such legislative power shall be exercised by ordinance, except for the exercise of the following powers which are required to be, or are permitted to be, exercised by resolution:
(iv)
(g) Shall pass in accordance with this chapter whenever ordinances and resolutions it deems necessary and proper for the good governance of the county.
(D.) Deputy Manager.
(ii) The deputy manager shall by education, experience and ability be qualified to perform the duties established for him.
He need not be a resident of the county at the time of his appointment, but during his tenure may live outside the county only with the permission of the manager.
(iii) The deputy manager shall be responsible only to the manager. He shall, under the direction and supervision of the manager, undertake to assist in the orderly and efficient administration of the county, performing whatever supervisory or administrative duties the manager deems necessary and proper.
Nothing in this section shall be deemed to prohibit the deputy manager's being appointed to head one or more departments on a temporary or permanent basis.
(B.) County Manager.