Ohio Revised Code Title XLI. Labor and Industry § 4109.10

(A) No employer shall give employment to a minor, without agreeing with him as to the wages or compensation he shall receive for each day, week, month, or year; or per piece, for work performed. The employer shall furnish the minor with written evidence of the agreement and, on or before each payday, with a statement of the earnings due and the amount to be paid to him. No employer shall reduce the wages or compensation of any minor without giving him notice at least twenty-four hours previous to the reduction, at which time a written agreement shall be entered into with the minor as in the case of original employment.

(B) No employer shall retain or withhold from a minor in his employ the wages or compensation, or any part thereof, agreed to be paid and due the minor for work performed or services rendered because of presumed negligence or failure to comply with rules, breakage of machinery, or alleged incompetence to produce work or perform labor according to any standard of merit.

(C) No employer shall receive a guarantee, bonus, money deposit, or other form of security to obtain or secure employment for a minor or to ensure faithful performance of labor, guarantee strict observance of rules, or make good losses which may be charged to the minor's incompetence, negligence, or inability.