Ohio Rev. Code § 145.56
The right of an individual to a pension, an annuity, or a retirement allowance itself, the right of an individual to any optional benefit, any other right accrued or accruing to any individual, under this chapter, or under any municipal retirement system established subject to this chapter under the laws of this state or any charter, the various funds created by this chapter, or under such municipal retirement system, and all moneys, investments, and income from moneys or investments are exempt from any state tax, except the tax imposed by section 5747.02 of the Revised Code, and are exempt from any county, municipal, or other local tax, except income taxes imposed pursuant to section 5748.02, 5748.08, or 5748.09 of the Revised Code, and, except as provided in sections 145.57, 145.572, 145.573, 145.574, 3105.171, 3105.65, and 3115.501 and Chapters 3119., 3121., 3123., and 3125. of the Revised Code, shall not be subject to execution, garnishment, attachment, the operation of bankruptcy or insolvency laws, or other process of law whatsoever, and shall be unassignable except as specifically provided in this chapter and sections 3105.171, 3105.65, and 3115.501 and Chapters 3119., 3121., 3123., and 3125. of the Revised Code.
R.C. § 145.56