Yes. But many of these aren't nearly as common as blue- and white-collar. Gold collar signifies white-collar workers who come with higher skills and are in higher demand. These include doctors, engineers, lawyers, and pilots. Red-collar workers are those who work in the government whose salaries come from the red ink budget. This category may also include farmers. Pink-collar is an outdated term that was used to describe sectors that were historically dominated by women, including nursing and secretarial work. One of the newest types of collar colors is the green collar, which refers to jobs in the environmental sector.