All work is free work - or is it? Rooted in the historical and theoretical debates over the status of labor, this volume analyzes the relationship between free and forced work, migration, and the role that states play in producing un-freedom. With contributions among others from Stephen Castles, Cindy Hahamovitch, Vincent Houben and William G. Martin, the book explores constrained labor forms across the world from the mid-19th century to today.