Miss. Code § 25-9-121
The state service, as defined by Section 25-9-107, shall consist of all positions now existing in the state departments, agencies and institutions or hereafter established, except those included in the nonstate service by this chapter. Such positions shall be covered by the state personnel system. Any officer or employee who has acquired a valid permanent status under the Mississippi Coordinated Merit System Council existing on February 1, 1981, shall continue in such status and shall not be required to take further or new examinations in order to retain such status. Any officer or employee who has been certified by the Mississippi Classification Commission and appointed by a state agency head as of February 1, 1981, shall continue in such status and shall not be required to take further or new examinations in order to retain such status.
Miss. Code § 25-9-121