27 Miss. Code. R. 120-5.12
State law governing drug and alcohol testing of employees and job applicants provides procedures and guidelines for appointing authorities who wish to formulate a drug and alcohol testing policy. Except as provided by federal law, agencies are not required to administer drug or alcohol tests. If an agency chooses to implement a drug and alcohol testing policy, it must comply with State law. However, Mississippi's statutory law regarding drug and alcohol testing does not apply to agencies subject to any federal law or regulations which govern the administering of drug and alcohol tests. Agencies are also required to be cognizant of the proscriptions of the Americans with Disabilities Act regarding pre-employment medical tests. Refusal to take a drug or alcohol test when directed to do so by an employer, in accordance with applicable state and federal law, is considered good cause for possible disciplinary action pursuant to Chapter 7.
27 Miss. Code. R. 120-5.12