Ohio Rev. Code § 2701.02: Courts must render decisions within time limit.

When submitted to a court on motion, demurrer, or motion for new trial, or when submitted to a court on appeal on questions of law or on final trial on the issues joined, a cause begun in a court of record shall be determined and adjudicated within thirty days after such submission.

This section applies to causes sent to a referee or special master, and to motions affecting the confirmation, modification, or vacation of a report thereof. This section does not affect, alter, or change the rules of the supreme court.