Okla. Stat. tit. 74 § 935
Any statewide organization limited to state employee membership with a minimum membership of one thousand (1,000) dues-paying members may annually send one general mailing to all retired members of the Oklahoma Public Employees Retirement System and shall pay for the total cost. The Board of Trustees and any qualifying organization under this section shall agree on the method of providing a list of retired members of the system and their addresses to accomplish the mailing, while preserving the confidentiality of the list. Such an agreement may include providing the list to a third party in the business of providing mailing services if the third party agrees to maintain the confidentiality of the list. The System shall not be held responsible or be liable to retired members for providing the names and addresses as provided herein.
Okla. Stat. tit. 74, § 935