manual laborer; blue-collar worker
Refers to a person who does physical work, often in construction, factories, or similar settings. Neutral term.
When he was young, he worked as a manual laborer.
Many manual laborers live in this area.
Refers to a knowledge worker or white-collar worker, contrasting with the physical nature of 肉体労働者.
Compound of 肉体 (body, physical) + 労働者 (worker, laborer).