(1) The chief governing body must establish a written plan of the post- employment benefits provided;
(2)
(A) The investment committee of the political subdivision must adopt, in writing, an investment policy authorizing how assets in the trust may be invested. The policy shall not authorize assets in the trust to be invested in any instrument, obligation, security, or property that would not constitute a legal investment for assets of Tennessee domestic life insurance companies;
(B) Notwithstanding subdivision (2)(A), the investment committee of a political subdivision may adopt, in writing, an investment policy authorizing assets in the trust to be invested and managed in accordance with the investment policy the political subdivision utilizes to manage pension assets; provided, however, that the pension fund management must conform to the Tennessee Uniform Prudent Investor Act of 2002, compiled in title 35, chapter 14;
(3) The trust must conform to all applicable laws, rules and regulations of the internal revenue service, if any. Notwithstanding subdivision (4) to the contrary, it shall be the sole responsibility of the political subdivision to ensure that the trust conforms to the laws, rules and regulations of the internal revenue service; and
(4) The trust document must be submitted to the state funding board for approval.