Ohio Rev. Code § 4123.43: Deposit of funds not required for immediate use.

The treasurer of state may deposit any portion of the state insurance fund not needed for immediate use in the same manner as and subject to all the laws with respect to the deposit of state funds by the treasurer of state. All interest earned by such portion of the state insurance funds as is deposited under this section shall be collected by the treasurer of state and placed to the credit of such fund.