I was given a job last year to wire up an exhaust motor in a makeshift storage area. They stored 55 gallon drums of "trike" and other flammable liquids that I can't remember off hand. The motor was not explosion proof as was nothing in this room. They wanted me to tap into the lighting circuit and run a circuit to the motor(all wiring inside the room). When I told my boss that it the room had to be rerwired to meet code, he said that industrial companies do not have to meet code standards.
So, I told him to have safety clear it and of course our safety department(a joke) said everything was ok.
When I asked one simple question, I knew I was right, I asked:
"Why do we need an exhuast fan?"
they answered:
"Because of the fumes"
My company has a long practice of this kind of work practices. The problem is you can only deny to do your job to a point before you jeopardize your job or relations with your company.

What grounds and backing do I have to stand on?