Ohio Rev. Code § 2712.29: Mandate of arbitrator terminates.

(A) The mandate of an arbitrator terminates if he becomes de jure or de facto unable to perform his functions or for other reasons fails to act without undue delay, and if he withdraws from his office or the parties agree to the termination of his mandate. The withdrawal or agreement shall not imply acceptance of the validity of any ground referred to in section 2712.22 of the Revised Code.

(B) If a controversy remains concerning any of the grounds referred to in this section, a party may request the court of common pleas to decide on the termination of the mandate. A decision of the court of common pleas under this division is not appealable.

(C) The mandate of an arbitrator also terminates upon his withdrawal from office for any reason, or by or pursuant to agreement of the parties.