27 Miss. Code. R. 240-III-3.4
Once an Eligible Employee has irrevocably elected to participate in the Plan, the Eligible Employee must once again participate in the Plan upon any subsequent reemployment in a Plan-eligible position. An individual reemployed in an ORP-eligible position shall complete and return to the employing Institution within 30 days of reentry into employment in an ORP-eligible position (1) Form 4S, Vendor Selection Change, and (2) the appropriate enrollment form(s) for the Fund Sponsor(s) and Funding Vehicle(s) selected. If an individual reemployed in an ORP-eligible position does not return the Vendor Selection Form to the employer within 30 days of reentry into employment in an ORP-eligible position, his or her previous Vendor Selection Form shall be reactivated. Moreover, any Eligible Employee drawing a monthly retirement allowance from the Public Employees' Retirement System of Mississippi, who is subsequently employed in a Plan-eligible position must comply with the reemployment limitations as they may be amended from time to time as set forth in Miss. Code Ann. Section 25-11-127 (1972, as amended), unless such retirement allowance is terminated and the Employee returns to PERS-covered employment.
27 Miss. Code. R. 240-III-3.4