(a) The following are exempt from execution, attachment, garnishment, or any other process:
(1) benefit payments, active employee and state contributions, and retiree, surviving spouse, and surviving dependent child contributions;
(2) any rights, benefits, or payments accruing to any person under this chapter; and
(3) any money in the fund.
(b) The items listed in Subsection (a) may not be assigned except for direct payment to benefit providers as authorized by the trustee by contract, rule, or otherwise.