Unpaid workers are individuals who work without receiving any form of compensation. This includes people who are employed in the informal economy, such as domestic workers, agricultural workers, and those who are self-employed. Two examples of unpaid workers are ants and SERFS. Ants are small insects that work together to build complex structures and collect food for their colony. SERFS were a class of peasants in medieval Europe who were bound to the land and had to provide labor services to their lord in exchange for protection and the right to use the land.