erawhon

i work for a utility company in so.cal. which requires me to drive a company vehicle. If i get in ANY accident (whether i hit something or someone hits me) my boss will pick me up from the accident and take me to get a piss test (company policy). Ive been trying to think of a loop hole and im pretty much stumped. The best idea iv came up with is getting a presecription for medical marijuana but i dont know if there are any laws in place that will protect me. Does anyone know if that would stop me getting fired and are there any other ideas out there?? Please help its been 9 mo's and im dying!!!!!