When the Commission receives a claim, the Commission: may investigate the claim; and on application of any party to the claim, shall order a hearing. The Commission shall make or deny an award within 30 days: after the mailing of the notice of the filing of a claim; or if a hearing is held, after the hearing is concluded. The decision shall be recorded in the principal office of the Commission, and a copy of the decision shall be sent to each party’s attorney of record or, if the party is unrepresented, to the party: by first–class mail; or by electronic means, if the party’s attorney of record consents or, if the party is unrepresented, the party consents.