I work in retail, and I go to work stoned everyday. I have to greet and approach customers, sell them stuff, address technical and other concerns, etc. Being high sometimes causes me to stumble on my words, but that's something that normal people do from time to time. So I don't let it bother me. Being stoned makes me a little more apathetic toward some of the incoming customers; it's easy to get jaded when so many of them ignore you or avoid you. But all in all, I feel I can do my job just as well stoned as I can sober. (My employers obviously do not know I smoke weed before work.)