Mass. Gen. Laws ch. 209D, § 3-307
Duties of support enforcement agency.
(a) In a proceeding under this chapter, a support enforcement agency of the commonwealth, upon request:
(b) A support enforcement agency of the commonwealth that is providing services to the petitioner shall:
(c) A support enforcement agency of the commonwealth that requests registration of a child support order in the commonwealth for enforcement or for modification shall make reasonable efforts: