what was the little Little Tramp's

what was the little Little Tramp's job?
The story features the The Little Tramp,Chaplin's foods character,who is trying to survive in the modern industrialized world. The film shows the Little Tramp woring in a factory on an assembly line that never seems to stop.A feeding machine gives him food while he continues tightening the bolts on a moving belt.
The Little Tramp can't stand the monotony----doing the same thing over and over----and suffers a mental breakdown.