Cathedral builders were among the most sought after, and highest paid, workers and artisans in medieval Europe. They had de facto unions, free week ends, limited work hours and basic health care. They could enforce that because there were only so many qualified people to build cathedrals back then.

Servitude labour was more of a thing for castles, Cathedrals were build in towns and cities, with free citizens. Castles were build by nobles and those had servitude populations to draw labour from.