W. Va. Code § 23-5-12
(b) The board shall set a time and place for the hearing of arguments on each claim and shall notify the interested parties thereof. The review by the board shall be based upon the record submitted to it and such oral argument as may be requested and received. The board may affirm, reverse, modify, or supplement the decision of the administrative law judge and make such disposition of the case as it determines to be appropriate. Briefs may be filed by the interested parties in accordance with the rules of procedure prescribed by the board. The board may affirm the order or decision of the administrative law judge or remand the case for further proceedings. It shall reverse, vacate, or modify the order or decision of the administrative law judge if the substantial rights of the petitioner or petitioners have been prejudiced because the administrative law judge’s findings are:
(c) After a review of the case, the board shall issue a written decision and send a copy by mail to the parties.