Maryland Code, Labor and Employment § 8.3-906

(a)(1)(i) The Secretary shall establish a system for appeals by covered individuals regarding determinations of benefit amounts, benefit durations, and denials of benefits under this title.

(ii) A covered individual must file an appeal under subparagraph (i) of this paragraph within 30 days after the determination is made or benefits are denied, unless good cause can be shown for the delay.

(iii) If a covered individual prevails in an appeal of an adverse decision of an employer or insurer, the Department may assess the Department's costs of the appeal against the employer or insurer.