27 Miss. Code. R. 210-34-102
No person who is being paid a retirement allowance or a pension after retirement under Article 3 of the Mississippi Code of 1972, as amended, shall be employed or paid for any service by the State of Mississippi or any of its departments, agencies, or subdivisions participating in PERS, including services as an employee, contract worker, contractual employee or independent contractor, until the retired person has been retired for not less than 90 consecutive days from his or her effective date of retirement. After the person has been retired for not less than 90 consecutive days from his or her effective date of retirement or such later date as established by the board in Section 106.2 of this regulation, he or she may be reemployed while being paid a retirement allowance under the terms and conditions provided in Section 103 of this regulation. (See Sections 109 and 110 for work as an independent contractor or for work through a third party.)
No person being paid a retirement allowance or a pension after retirement under Title 25, Chapter 13 of the Mississippi Code of 1972, as amended, shall be (i) employed in a law enforcement position with the Mississippi Highway Patrol (MHP) or the Mississippi Bureau of Narcotics (MBN) or (ii) paid from the MHP budget or the MBN budget while being paid a retirement allowance from MHSPRS, if such employment commences on or after December 1, 2013. An MHSPRS retiree may be employed in any capacity with an employer other than MHP or MBN and remain in compliance with this rule.
27 Miss. Code. R. 210-34-102