Lulu the Tool (1971)

Lulù is a very hard worker, so he is loved by the bosses and hated by his own colleagues. The unions decide agitations against the masters. Lulù doesn't agree until he accidentally cuts off one of his own fingers. Now understanding the workers' conditions, he agrees with the unions and participates in the strike. Immediately he is fired; then he's abandoned not only by his colleagues but also by his lover. But the unions' fights allow him to be rehired under a new legislation. At this point his mind starts giving collapse signs.