Changes

Blue-collar workers are laborers who work in factories or other union-type jobs.  Blue-collar workers often use their hands, get their clothes dirty during the job, and do not sit behind a desk.  They are called "blue-collar" workers because they would wear colored t-shirts or other work shirts, rather than a white shirt and tie.

Blue-collar workers are laborers who work in factories or other union-type jobs.  Blue-collar workers often use their hands, get their clothes dirty during the job, and do not sit behind a desk.  They are called "blue-collar" workers because of the sterotypical image of them wearing blue colored overalls or other work shirts, rather than a white shirt and tie.