The term 'working stiff' is a slang term used to describe someone who works hard for little pay. It can refer to a variety of different jobs, including a prole (5 letters), which is a person who works in a factory or other manual labor job; a PEON (4 letters), which is a person who does menial tasks; a SCHMO (5 letters), which is a person who does unskilled labor; and a LABORER (7 letters), which is a person who does physical labor. All of these jobs require hard work and often involve long hours for low pay.