Section 122.15 - Benefits exempt from taxes and execution(1) The pensions, annuities, or any other benefits accrued or accruing to any person under the provisions of this chapter and the accumulated contributions and the cash securities in the funds created under this chapter are hereby exempted from any state, county or municipal tax of the state and shall not be subject to execution or attachment or to any legal process whatsoever and shall be unassignable.(2) This subsection shall have no effect upon this section except that the department may, upon written request from the retired member, deduct premiums for group hospitalization insurance from the retirement benefit paid such retired member.s. 16, ch. 29801, 1955; s. 1, ch. 59-305; ss. 31, 35, ch. 69-106; s.63, ch. 99-255.