Ohio Rev. Code § 9.81
After an authorization adopted under section 9.80 of the Revised Code, any public officer or employee of any department or division of the state, any political subdivision or school district thereof, or of any institution supported in whole or in part by the state, a county, or municipal corporation, who desires to make a contribution by the payroll deduction plan to one or more of the specified charitable agencies which are corporations not for profit, community chests, united funds, or other similar united community fund organizations, may be permitted to have such contribution payments deducted from the salary or wages due such public officer or employee by filing a written request and authorization signed by such public officer or employee and specifying the amount of the deduction in each payroll period with the fiscal officer of the state, political subdivision, or school district, or institution by which such public officer or employee is employed. Such authorization may be withdrawn in writing by such public officer or employee at any time. No funds may be withheld from the salary or wages of any such public officer or employee for the purposes permitted by sections 9.80 and 9.81 of the Revised Code unless the withholding is specifically, freely, and voluntarily authorized by that public officer or employee in writing.
Upon receipt of evidence of such request by the appropriate fiscal officer, or upon receipt of a written deduction authorization under division (B)(2) or (C) of section 4117.09 of the Revised Code, such fiscal officer shall make such deduction and shall, at periodic intervals to the extent of the amount collected, pay the designated charitable agencies which are corporations not for profit, community chests, united funds, or other similar united community fund organizations, or the exclusive representative designated under section 4117.05 of the Revised Code.
R.C. § 9.81