What distinguished patricians from plebeians in Roman society?

The patricians (from Latin: patricius) were originally a group of ruling class families in ancient Rome. The distinction was highly significant in the Roman Kingdom, and the early Republic, but its relevance waned after the Conflict of the Orders (494 BC to 287 BC). By the time of the late Republic and Empire, membership in the patriciate was of only nominal significance

labor leaders and organizations had the power to demand it.

explanation:

workers got a five-day workweek because the bcea protects and respect the rights of the employees. labor leaders and other groups demanded it.