Mississippi Code Title 71. Labor and Industry § 71-7-5

(a) Employers may require job applicants to submit to a drug and alcohol test as a condition of the employment application and may use a refusal to submit to a test or positive confirmed test result as a basis for refusal to hire.

(b) An employer may require all employees to submit to reasonable suspicion drug and alcohol testing. There is created a rebuttable presumption that the employer had reasonable suspicion to test for drugs if the specimen provided by the employee tested positive for drugs in a confirmatory drug test.

(c) An employer may require all employees to submit to neutral selection drug and alcohol testing pursuant to Section 71-7-9.

(d) An employer may administer drug and alcohol testing or require that the employee submit himself to drug and alcohol testing as provided under Section 71-3-121 in the event that the employee sustains an injury at work or asserts a work-related injury.