(a) Decision. The commission shall make its decision upon the expiration of 30 days or later following service of the judge's proposal for decision, unless the parties have waived review. The decision, if adverse to any party, shall include findings of fact and conclusions of law separately stated. If any party has filed proposed findings of fact at the request of the judge, the commission will include in its decision a ruling on the proposed findings of fact, unless waived by the party.(b) Prompt decision. The commission's decision or order should be signed not later than 60 days after the date that the hearing is finally closed. In a contested case heard by an administrative law judge, the agency or the administrative law judge who conducts the contested case hearing may extend the period in which the decision or order may be signed.