All casualty rates shall be made in accordance with the following:
Classifications or modifications of classifications, or any portion or any division thereof, of risks may be predicated upon size, expense, management, individual experience, purpose of insurance, location or dispersion of hazard, or any other reasonable considerations, provided such classifications and modifications apply to all risks under the same or substantially the same circumstances or conditions. Classification rates may also be modified to produce rates for individual or special risks which are not susceptible to measurement by any established standards.
Except to the extent necessary to comply with division (D) of this section, uniformity among insurers in any matters within the scope of this section is not required.
Sections 3937.01 to 3937.17, inclusive, of the Revised Code do not prohibit or regulate the payment of dividends, savings, or unabsorbed premium deposits allowed or returned by insurers to their policyholders, members, or subscribers. No plan for the payment of dividends, savings, or unabsorbed premium deposits allowed or returned by insurers to their policyholders, members, or subscribers shall be deemed to be a rating plan or system.
Such sections do not abridge or restrict the freedom of contract of insurers, agents, or brokers with reference to the amount of commissions or fees to be paid to such agents or brokers by insurers, and such payments are expressly authorized.
Two or more insurers, not members of or subscribers to a rating organization, may act in concert in the making or use of rates when executing fidelity or surety bonds through cosurety or reinsurance, or when affiliated through common ownership, management, or control.
R.C. §3937.02