Ohio Revised Code General Provisions § 9.32

Whenever the state, or any political subdivision, district, institution, or other agency thereof awards a contract for the construction, demolition, alteration, repair, or reconstruction of a public improvement, the contracting authority shall simultaneously notify the surety on the contractor's bond of the award and the agent of the surety who executed the bond on behalf of the surety.  The notice shall be given in writing and mailed to the surety and the agent whose names and addresses appear on the bond.