Winner of the 2020 PROSE Award for Multivolume Reference/Humanities Work was central to medieval life. Religious and secular authorities generally expected almost everyone to work. Artistic and literary depictions underlined work's cultural value. The vast majority of medieval people engaged in agriculture because it was the only way they could obtain food. Yet their work led to innovations in technology and production and allowed others to engage in specialized labor, helping to drive the growth of cities. Many workers moved to seek employment and to improve their living conditions. For...