Ohio Revised Code Title I. State Government § 145.36

(A) An annuity having a reserve equal to the amount of the retirant's accumulated contributions;

(B) A pension that shall be the difference between the member's annuity and an annual amount determined by multiplying the total service credit of the retirant, and in addition thereto the projected number of years and fractions thereof between the effective date of the member's disability retirement and attainment of the applicable age, assuming continuous service, by two and two-tenths per cent of the member's final average salary.

Where the recipient is not receiving a disability benefit under section 145.37 of the Revised Code and is receiving a disability benefit from either the state teachers retirement system or the school employees retirement system, the recipient shall not be eligible for service credit based upon the number of years and fractions thereof between the date of disability and attained age sixty as provided for in this division.

In no case shall disability retirement be less than thirty per cent or more than seventy-five per cent of the member's final average salary, except that it shall not exceed any limit to which the retirement system is subject under section 415 of the “Internal Revenue Code of 1986,” 100 Stat. 2085, 26 U.S.C.A. 415, as amended.

A year of service for the purpose of disability retirement is a complete year of full-time employment, or the equivalent thereof. The public employees retirement board is the final authority in determining the eligibility of a member for disability retirement.