Ohio Rev. Code Ann. § 3937.11

The superintendent of insurance shall, at least once in five years, make an examination of each rating organization licensed in this state as provided in section 3937.05 of the Revised Code. Such superintendent may, as often as he deems it expedient, make an examination of each advisory organization referred to in section 3937.09 of the Revised Code and of each group, association, or other organization referred to in section 3937.10 of the Revised Code. The reasonable costs of any such examination shall be paid by the rating organization, advisory organization, group, association, or other organization examined upon presentation to it of a detailed account of such costs. The officers, manager, agents, and employees of such rating organization, advisory organization, group, association, or other organization may be examined at any time under oath and shall exhibit all books, records, accounts, documents, or agreements governing its method of operation. In lieu of any such examination the superintendent may accept the report of an examination made by the insurance supervisory official of another state, pursuant to the laws of such state.