1. Any member, on the first day of the first month following the original effective date of sections 104.310 * to 104.540 , September 1, 1957, shall be entitled to creditable prior service for the purpose of sections 104.310 * to 104.620 for all active military service performed in the United States Army, Air Force, Navy, Marine Corps, Coast Guard and members of the United States Public Health Service when in the active military service, or any women's auxiliary thereof in time of active armed warfare, if such member was a state employee immediately prior to the member's entry into the armed services and became an employee of the state within ninety days after termination of such service under honorable conditions or release to inactive status in a reserve component of the Armed Forces. This includes:
(1) Members of the reserve component of the Armed Forces (National Guard of the United States, United States Army Reserve, Air National Guard of the United States, United States Air Force Reserve, United States Naval Reserve, United States Marine Corps Reserve, United States Coast Guard);
(2) Reserve components existing prior and subsequent to the original effective date of sections 104.310 * to 104.540 ; and
(3) The reserve of the United States Public Health Service, while in the active military service of the United States.
2. Any former full-time employee of a state board, whether unassigned or assigned to the governor, who becomes a member within one year of termination of employment with the board, shall be entitled to creditable prior service not to exceed eight years for service rendered, provided the member had not become vested in a city or county retirement system and has or attains one or more years of continuous service.
3. Notwithstanding any other provision of law to the contrary, any employee of a political subdivision who becomes a state employee, or gains eligibility to become a member, by an act, or acts, of the general assembly after August 13, 1986, making such employment state employment shall be entitled only to prior service credit for such employment with a political subdivision. Such prior service credit, which cannot exceed eight years, shall be used in the determination of eligibility for benefits pursuant to the provisions of sections 104.310 * to 104.612 but not in determining the amount of benefits, if the person makes application to the board for such prior service credit within ninety days of becoming a member of the Missouri state employees' retirement system, and establishes such service to the satisfaction of the board; except that such prior service credit shall not be used for the purposes of computing the minimum benefit provided by section 104.615 .
4. Any member who had performed active service in the United States Army, Air Force, Navy, Marine Corps, Army or Air National Guard, Coast Guard, or any reserve component thereof prior to last becoming a member, or who is otherwise ineligible under subsection 1 of this section or other provisions of this chapter, and who became a member after the person's discharge under honorable conditions may elect, prior to retirement, to purchase all of the member's creditable prior service equivalent to such service in the Armed Forces, but not to exceed four years, provided the person is not receiving and is not eligible to receive retirement credits or benefits from any other public or private retirement plan for the service to be purchased. However, if the member is eligible to receive retirement credits in a United States military service retirement system, the member shall be permitted to purchase creditable prior service equivalent to such service in the Armed Forces, but not to exceed four years, any other provision of law to the contrary notwithstanding. The purchase shall be effected by the member's submission of appropriate documentation verifying the member's dates of active service and by paying to the retirement system an amount equal to what would have been contributed by the state in the member's behalf had the member been a member for the period for which the member is electing to purchase credit and had the member's compensation during such period of membership been the same as the annual salary rate at which the member was initially employed by a department, with the calculations based on the contribution rate in effect on the date of employment with simple interest calculated from the date of employment from which the member could first receive creditable service to the date of election under this subsection. The payment shall be made over a period of not longer than two years, measured from the date of election, and with simple interest on the unpaid balance. Payments made for such creditable prior service under this subsection shall be treated by the retirement system as would contributions made by the state and shall not be subject to any prohibition on member contributions or refund provisions in effect at the time of enactment of this subsection ** .
5. Any member who terminated employment prior to August 13, 1986, who had served in the Armed Forces of the United States prior to becoming a member, or who is otherwise ineligible pursuant to subsection 1 of this section or other provisions of this chapter, and who became a member after the person's discharge under honorable conditions shall, upon application to the board of trustees of the Missouri state employees' retirement system, be made, constituted and appointed and employed by the board as a special consultant on the problems of retirement, aging and other state matters for the remainder of the person's life. Upon request of the board of the system or the court from which the person retired, the consultant shall give opinions or be available to give opinions in writing or orally in response to such requests. As compensation for such services, the consultant shall be eligible to purchase, prior to retirement, creditable prior service as provided in this subsection.
6. Any member who is an employee on or after June 30, 1988, shall be entitled to creditable prior service for all full-time service rendered at Lincoln University prior to June 30, 1988, if such service is established to the satisfaction of the board, provided such member elects in writing to forfeit all rights accrued under the Lincoln University retirement plan for such service, and provided such service is not now credited the member under the Missouri state employees' retirement system.
7. Any person who is an employee on or after August 28, 1989, and who has been denied credit for any service because the person was a member of some other retirement system or benefit fund to which the state was a contributor shall receive creditable prior service for all the service rendered which would have otherwise been earned during such period of service by the person except for the denial of credit; however, in no event shall any person receive service credit for the same period of service under more than one retirement system.
8. Upon application to the board, any member or former member not yet retired previously employed by the Missouri institute of psychiatry prior to July 1, 1974, and who by virtue of such employment was a member of a retirement system or plan other than the Missouri state employees' retirement system but did not become vested in that system or plan shall receive creditable prior service for such service, provided that such service is not used for the calculation of benefits under any other retirement system or plan, excluding Social Security, and that such service is established to the satisfaction of the board.
9. Any retired member previously employed by the Missouri institute of psychiatry prior to July 1, 1974, and who by virtue of such employment was a member of a retirement system or plan other than the Missouri state employees' retirement system but did not become vested in that system or plan may make application to be made, constituted, appointed, and employed by the board as a special consultant on the problems of retirement, aging and other state matters. As compensation the special consultant shall receive beginning the month next following such appointment an amount equal to the retirement benefit the member would have been receiving had such service been included in the original retirement benefit calculation, provided that such service is not used for the calculation of benefits under any other retirement system or plan, excluding Social Security, and that such service is established to the satisfaction of the board.
10. Notwithstanding any other provisions of law to the contrary, if a former employee terminated employment before January 1, 1988, and such former employee had also served as a board member pursuant to the provisions of section 329.190 , such former employee shall upon application to the board of trustees of the Missouri state employees' retirement system be made a special consultant on the problems of retirement and shall upon request of the board of trustees give opinions in writing or orally in response to such request. As compensation for such services, the former employee shall receive creditable service for all time the former employee was employed by the state and the time the former employee served on the board pursuant to the provisions of section 329.190 , provided that such service is not used for vesting in any other public employee retirement system.