Ohio Revised Code Title XLI. Labor and Industry § 4109.12

(A) No person shall continue to employ any minor in violation of any law relating to the employment of minors after being notified of the violation in writing by the director of commerce or other enforcement official.

Failure of the director or other enforcement official to give such notice does not excuse or negate a conviction for any offense except a violation of this division.

(B) No employer shall employ, and no person having under the person's control as parent, guardian, or custodian, any minor, shall permit or suffer a minor to be employed in violation of any law relating to the employment of minors for which a penalty is not otherwise provided by law.