My take. Pot is still a banned substance under Federal law and so it is with Fedex. States have decided to "adjust" this ban, States rights, etc. I believe if you operate any vehicle while working for FedEx you should not be under the influence of any substance FedEx or DOT, deems banned. This includes anyone operating equipment; trucks, vans, tugs, forklifts, loaders, sort machinery, etc., including ramp agents doing WB. If you are just a handler packing cans / trucks or putting boxes on a belt and not dealing with DG or securing pallets, do what you want as long as you do the job right, show up on time and don't endanger others.