Work has undergone major changes over the past half century and over the past 20 years the number of farm managers has decreased considerably. This month "La voix de l'élevage" takes a sociological look at the transformation of the world of work in the agricultural sector, with François Purseigle, university professor in sociology at the Institut National Polytechnique de Toulouse, director of the Department of Economic, Social and Management Sciences at the Ecole Nationale Supérieure Agronomique de Toulouse.