The appellant shall file a written notice of appeal, signed by him or by his attorney or other qualified representative, in the Office of the Director, within 30 days from the date of mailing of the decision from which the appeal is taken. The notice shall contain an identification of the action or decision appealed from and give a concise but complete statement of the facts relied upon and the relief sought. The appellant shall mail a copy of the notice of appeal, any accompanying statement of reasons therefor, and any written arguments or briefs, to each party to the proceedings or whose rights are involved in the case, and to the Departmental official whose action or decision is being appealed. The notice of appeal shall contain a certificate setting forth the names of the parties served, their addresses, and the dates of mailing.