Mo. Rev. Stat. ยง 86.243
86.243 Regular actuarial surveys โ adoption of mortality tables โ certification of ...
86.243. Regular actuarial surveys โ adoption of mortality tables โ certification of contribution rates. โ At least once in each five-year period the actuary shall make an actuarial investigation into the mortality, service and compensation experience of the members and beneficiaries of the retirement system and shall make a valuation of the assets and liabilities of the system and taking into account the results of such investigation and valuation the board of trustees shall:
(1) Adopt for the retirement system such mortality, service and other tables as shall be deemed necessary;
(2) Certify the rates of contribution payable by the said cities.
(L. 1957 p. 256 ยง 14, A.L. 2000 H.B. 1808) Effective 7-01-00