SDCL § 9-16-47: Benefits and contributions exempt from assignment and process.

All annuities, pensions, retirement allowances, the accumulated contributions of any member, or any other benefit whatsoever accrued or accruing to any member or beneficiary shall be unassignable and shall not be subject to execution, attachment, garnishment, or any other process of law whatsoever, except as is specifically provided by this chapter.