This chapter and Article 2 (commencing with Section 11357) and Article 2.5 (commencing with Section 11362.7) of Chapter 6 of Division 10 of the Health and Safety Code shall not interfere with an employer’s rights and obligations to maintain a drug and alcohol free workplace or require an employer to permit or accommodate the use, consumption, possession, transfer, display, transportation, sale, or growth of cannabis in the workplace or affect the ability of employers to have policies prohibiting the use of cannabis by employees and prospective employees, or prevent employers from complying with state or federal law.