Indiana Code Title 34. Civil Law and Procedure § 34-57-2-9

Sec. 9. (a) The award must be in writing and signed by the arbitrators concurring therein.  It must include a determination of all the questions submitted to the arbitrators, the decision of which is necessary in order to determine the controversy.  The arbitrators shall deliver a copy to each party personally or by registered mail, or as provided in the agreement.

(b) An award shall be made within the time fixed by the agreement or, if not fixed, or, if not agreed upon, within a reasonable time.  The parties may extend the time in writing either before or after the expiration of the time.  A party waives the objection that an award was not made within the time required unless the party notifies the arbitrators of his objection before service of a signed copy of the award on the party.