A. An employer's policy shall state the disciplinary actions that may be taken upon a refusal to undergo a drug or alcohol test or for a positive test for the presence of drugs or alcohol.

B. An employer may take disciplinary action, up to and including discharge, against an employee who refuses to undergo drug or alcohol testing conducted in accordance with the provisions of Section 551 et seq. of this title or who tests positive for the presence of drugs or alcohol.

C. Notwithstanding any provision of law for confidentiality of drug or alcohol testing results, nothing in the Standards for Workplace Drug and Alcohol Testing Act shall preclude an employer, contracting with another employer, from sharing drug or alcohol testing results of any tested person who works pursuant to such contractual agreement.