Mississippi Code Title 71. Labor and Industry § 71-7-15

(a) The employee or job applicant has expressly, in writing, granted permission for the employer to release such information;

(b) It is necessary to introduce a positive confirmed test result into an arbitration proceeding pursuant to a collective bargaining agreement, an administrative hearing under applicable state or local law, or a judicial proceeding, provided that information is relevant to the hearing or proceeding, or the information must be disclosed to a federal or state agency or other unit of the state or United States government as required under law, regulation or order, or in accordance with compliance requirements of a state or federal government contract, or disclosed to a drug abuse rehabilitation program for the purpose of evaluation or treatment of an employee; or

(c) There is a risk to public health or safety that can be minimized or prevented by the release of such information; provided, however, that unless such risk is immediate, a court order permitting the release shall be obtained prior to the release of the information.