How do you know that they are unskilled? I bet you never worked in a factory. I have. Many workers in a factory today have to be highly skilled. Visit a plant and see if you would be quallified to work there before you make asine statements.
I worked right across the street from a gm plant for years. Every break the union workers went on they would fill 3 enormous trash bins with the beer cans and other alcohol bottles they drank on their break and then return to the assembly line to finish your vehicle