12- 172 C.M.R. ch. 11, § 3
All deputy determinations of claimant eligibility and qualification for benefits, including determinations that separation was due to lack of work, shall be in writing and shall be mailed to the claimant and the claimant's most recent employer in the form of a Deputy's Decision. All such decisions shall include a notice to the employer that its experience rating record shall be charged with benefits paid to the claimant, if appropriate. Separate notices of potential benefit charges shall be issued to a chargeable employer only in the event such chargeable employer is not the claimant's most recent employer. The Deputy's Decisions shall also include a notice to the claimant and the employer that the decision may be appealed by either party to the Division of Administrative Hearings in writing within fifteen (15) days after the decision was mailed. Such appeal period may be extended for up to an additional fifteen (15) days for good cause shown. Upon timely appeal from a Deputy's Decision, the Division of Administrative Hearings shall conduct a hearing and issue a decision in accordance with Chapter 5 of these rules.
12- 172 C.M.R. ch. 11, § 3