(1) An order or decision in writing by the commission will issue in every proceeding. The order or decision shall contain separately stated findings of fact and conclusions of law. One copy of the order shall be served on each party. Additional copies may be requested, and will be provided at a charge to be fixed by the commission.

(2) The commission may adopt a presiding officer's (or examiner's) proposed decision. If a proposed decision is adopted in its entirety, the commission decision shall so state on the signature page. Where the only changes between the commission decisions and the presiding officer's or examiner's decision are those to correct grammar or typographical errors, the commission order or decision shall so state on the signature page.

(3) The commission may issue a decision which makes reference to the proposed decision and indicates disagreements with the presiding officer or examiner, and the commission may make further or modified findings and conclusions based on the record.