*enslaved* might be a more apt description.
However, the morons who put this socialist in place do, in fact, have a contract. The quid pro quo - their votes (and their souls) in return for *freebies* confiscated from the producing class.
Historians think that is the mechanism by which, under pressure of fierce tax collection, Roman freehold farmers were driven to seek the "protection" of local grandees, and thus became the serfs of Europe.
Note that they didn't become slaves -- they were never slaves, the slave class didn't go away (one of the oldest documents in proto-Old French is a bill of sale for a German woman slave, from the 6th century). Rather, they simply became bound -- to the land, and to their seigneur.