We operate an airplane that is very weight critical. Frequently to keep from making a stop, gross weight is exceeded by a couple hundred pounds, sometimes more. Flying as a copilot I don’t have much choice other than refusing to get on the plane. I’ve tried arguing both the safety and legal aspects. No one seems to think there would be a problem on one engine over gross. Even if the plane could do it, I’ve tried to say that the FAA could easily violate for being over gross if ramp checked. However no one believes that the FAA would ever be able to figure that out. So I guess my question is this an operating norm in the industry, and has anyone ever heard of an instance of being violated for being over gross? Thanks