Mass. Gen. Laws ch. 221 § 5
In addition to the assistant clerks provided for in section four, the clerks of the courts for the following counties may, subject to the approval of the court administrator as to compliance with personnel standards promulgated pursuant to section 8 of chapter 211B, appoint assistant clerks with the same powers and duties. Said appointments shall be as follows:
Barnstable, 2 assistant clerks
Bristol, 9 assistant clerks
Essex, 11 assistant clerks
Hampden, 12 assistant clerks
Nantucket, 1 assistant clerk
Norfolk, 9 assistant clerks
Middlesex, 26 assistant clerks
Plymouth, 6 assistant clerks
Worcester, 11 assistant clerks
Suffolk, (a) superior court department, by the clerk of the superior court department for criminal business, 21 assistants; (b) superior court department, by the clerk of the superior court department for civil business, 24 assistants; (c) supreme judicial court, by the clerk of the supreme judicial court for said county, a second assistant clerk, designated from his office force and a third assistant clerk, designated from his office force.
Mass. Gen. Laws ch. 221, § 5