20 Miss. Code R. § 101-200-202.03
Any decision of the Board of Review shall become final ten (10) days after the regular U.S. Mail mailing date or electronic transmittal date of the notification. No request by any party for reconsideration by the Board of its decision, made by a standard review of an ALJs hearing record, shall be considered by the Board.
However, in any case in which the Board of Review conducts a hearing and receives additional evidence, testimony, or hears argument on the issues, any party not present or represented at such a hearing may, not later than ten (10) days after the date of notification of the Board's decision, file with the Board a written request to set aside such decision and reopen the case for further hearings.
Such request shall state the reasons for the party's failure to appear and if the Board of Review determines that the party has made a showing of good cause for his or her failure to appear, it shall reschedule the case for further hearing and its final decision.
20 Miss. Code. R. § 101-200-202.03