Ohio Rev. Code Ann. § 4115.12

In order to facilitate the administration of sections 4115.03 to 4115.16 of the Revised Code, and to achieve the purposes of those sections, the director of commerce may adopt reasonable rules, not inconsistent with those sections, for contractors and subcontractors engaged in the construction, prosecution, completion, or repair of a public improvement financed in whole or in part by any public authority.