What were serfs required to be?

Serfs were required to work the land owned by their lord and perform various labor services, such as farming, tending livestock, and maintaining the estate. They were also obligated to pay rent, often in the form of a portion of their harvest. In exchange, serfs received protection and the right to live on the land, but they were bound to it and could not leave without permission. This system was a key aspect of the feudal structure in medieval Europe.