Ohio Revised Code Title XXIX. Crimes Procedure § 2938.12

A person being tried for a misdemeanor, either to the court, or to a jury, upon request in writing, subscribed by him, may, with the consent of the judge or magistrate, be tried in his absence, but no right shall exist in the defendant to be so tried. If after trial commences a person being tried escapes or departs without leave, the trial shall proceed and verdict or finding be received and sentence passed as if he were personally present.