I don't know about anyone else, but I have always been under the impression that you cannot be employed in a nursing position and "high" at the same time. You say you don't get high, but the fact of the matter is that you smoke a plant that alters the body's CNS, therefore endangering critical thinking. I don't know of any instance where the place I work at would ok such a thing. Heck, they even frown on people working with pain meds on board. And yes...you are subject to random drug checks and have to be tested on employment.