John is an employee of your business and per his doctor's orders he uses marijuana prior to going to work. While at work, he negligently forgets to file several orders that cause severe financial issues for the company?

The question is that?

Assume you are management and decide the ethical and legal aspects as to firing John with reference to the potential violation of the Americans with Disabilities Act by applying Positive Business Trajectory using the Code of Business Conduct and Ethics Amazon.com located in Appendix B of Butler,Positive Business Trajectory; see alsoJames v. City of Costa Mesa, 700 F.3d 394, 397 (9th Cir. 2012)