Ohio Rev. Code § 3739.17
In addition to any other immunities, defenses, and exclusions provided under the Revised Code, the state, the department of taxation, the department of commerce, the division of the fire marshal within the department of commerce, and any employees of the state, either department, or the division, are immune from liability in any civil action or proceeding arising from the performance or nonperformance of any duties specified in this chapter that the state, either department, the division, or any employees of the state, either department, or division are required to perform. In no event shall the state, either department, division, or any employees of the state, either department, or division be liable to any person for any claims for injury or damages, including, but not limited to, claims for indirect, consequential, incidental, special, or punitive damages or claims for lost profits, arising from the performance or nonperformance of the duties specified in this chapter that the state, either department, division, or employees of the state, either department, or division are required to perform.
R.C. §3739.17