Ohio Rev. Code § 3307.29: Deductions certified.

Each employer shall cause to be deducted, on each payroll of a contributor for each payroll period, the contribution payable by such contributor as provided in this chapter. Each employer shall certify to the treasurer of said employer on each payroll a statement as voucher for the amounts so deducted and for the amount of the normal contribution and the deficiency contribution payable by the employer. Each employer shall send a duplicate of such statement to the secretary of the state teachers retirement board.