Missouri Revised Statutes Title VI. County, Township and Political Subdivision Government § 70.635. Member's termination of employment, effect of--reemployment in system--retirement, service with more than one employer, effect of

1. When a member is no longer employed by any employer in a position covered by the system, he or she shall thereupon cease to be a member of the system. Except as otherwise provided in sections 70.600 to 70.755, upon termination of his or her membership his or her credited service shall be forfeited by him. If such person is not a retirant and becomes reemployed by any employer in a position covered by the system, he or she shall again become a member of the system. Should such reemployment or employment occur within a period of ten years from and after the date his or her membership last terminated, his or her credited service last forfeited by him or her shall be restored to his or her credit under the following conditions:

2. Upon a member's retirement he or she shall thereupon cease to be a member and, except as otherwise provided in sections 70.600 to 70.760, he or she shall not again become a member of the system.

3. Should a former member entitled to a deferred allowance provided for in section 70.675 become employed in a position covered by the system before becoming a retirant, he or she shall thereupon cease to be entitled to a deferred allowance, and he or she shall become a member, with his or her previous credited service reactivated and to be increased by such employment.

4. Upon the retirement of a member whose credited service results from employment with more than one employer, the amount of his or her allowance shall be based upon his or her total credited service in force at the time of his or her retirement and his or her final average salary during such total credited service. Each such employer shall be responsible financially, within the provisions of sections 70.600 to 70.755, for the portion of such allowance based upon the service credited such member for employment with such employer, and the benefit program to be applied to each such portion of credited service shall be the benefit program such employer had in effect at the time the member left the employment of such employer.