The working class are people that have to work jobs that are either monotonous and demeaning or dangerouns and dirty. Many of them work with little payment or high job insecurity in assembly lines and on highways, but some make more money than their upper-middle class white collar bretheren. I've met some people that are blue collar, yet live in a large house next to doctors and businessmen in a
subdivision, retired at 50, and drive new cars. Many of them have a similar standard of living to the middle class and after years of work (depending on career), get above-median
incomes, meaning that with two income-earners could have
six-figure incomes. Unfortunately, that is only a small percentage. A lot of them loose their jobs, homes, and end up in poverty.