Miss. Code § 21-29-251
Any municipality which has a population in excess of twenty thousand according to the 1970 federal decennial census and which lies within any Class 1 county touching the Mississippi River, located wholly within the Yazoo-Mississippi Delta Levee District and which has an approximate land area of five hundred seventy square miles, is hereby authorized and empowered, in its discretion, to adopt the following retirement program for policemen and firemen as an alternative to the program established in Sections 21-29-245 through 21-29-249, and which shall otherwise conform with the provisions of this article.
Any member of said fire and/or police department who has been in, and has received compensation for, fire and/or police department service for twenty years before the filing of an application as hereinafter provided, with the preceding ten years of service being continuous in the city to which application is made, may file a written application for retirement relief. Thereupon, said board of disability and relief shall retire such member from active service without a medical examination of disability and shall order the monthly payment to him from said fund of an amount equal to fifty percent of the average monthly base salary and longevity pay received as salary by him in the six-month period preceding the filing of such application. Thereafter, such payment, to be known as "retirement relief," shall be made to such retired member for the remainder of his life.
Any member of said fire and/or police department who has been in, and has received compensation for, fire and/or police department service for more than twenty years shall be entitled to, and shall receive, additional retirement relief for the remainder of his life of an amount equal to one and seven-tenths percent of the same average monthly base salary and longevity pay received by such member as salary in the six-month period preceding the filing of such application for each full year of service in excess of twenty years. However, such retired member shall receive the additional retirement relief provided in this paragraph only for each full year of service in excess of twenty years completed after July 1, 1966. No such retired member shall receive such additional retirement relief in excess of sixty-six and two-thirds percent of the same average monthly base salary and longevity pay received as salary by him in the six-month period preceding the filing of such application, excluding such other benefits as may be hereinafter provided.
Any member of said fire and/or police department who (1) has been in, and has received compensation for, fire and/or police department service for a period equal to or greater than five years and less than twenty years, and (2) has been forced to retirement on account of age may file a written application for pro rata retirement relief. Thereupon, said disability and relief board shall retire such member from active service without a medical examination for disability and shall order the monthly payment to him from said fund of an amount equal to two and one-half percent of the average monthly base salary and longevity pay received as salary by him in the six-month period preceding the filing of such application for each full year of active service.
Periods of time in which a member may have been inactive on account of physical or mental disability shall not be excluded in computing the hereinbefore-mentioned time periods, except that such periods of inactivity shall be excluded in computing the aforementioned five-year pro rata eligibility period. Periods of time in which a member may have been absent from such employment on account of active service in the Army or Navy of the United States, the United States Marine Corps or the United States Coast Guard between September 16, 1940, and July 25, 1947, or while as a civil employee engaged by the Army or Navy while serving outside the continental United States shall not be excluded in computing the hereinbefore-mentioned time period except that such periods of inactivity shall be excluded in computing the aforementioned five-year pro rata eligibility period. The discharge or release of such member from such armed forces shall have been under conditions other than dishonorable. Any member who has been retired or is voluntarily retired under this section, or who has received relief or disability benefits under this section, shall be required to report such duties as required by said disability and relief board.
The disability and relief board shall, when a member of the fire and/or police department completes thirty-five years of paid employment or attains the age of sixty, whichever occurs first, retire him from active service and order the payment of such funds as the member is entitled to under the provisions of this section. However, the continued employment of any member who has not completed twenty years of service may be authorized by the governing authority of the municipality on a year-to-year basis until the employee completes twenty years of active service or reaches the age of seventy, whichever occurs first.
Any person receiving retirement relief under the provisions of this section shall no longer be entitled to said relief upon attachment with a paid fire department or police department in another city having a paid retirement relief program for policemen or firemen.
The entitlement, under the particular retirement program in operation prior to the adoption of the alternative retirement program established in this section, of a policeman or fireman thereunder to any benefits or rights thereof shall not be diminished on account of the transition by such municipalities to the alternative retirement program established by this section.
Miss. Code § 21-29-251