This paper explores the conditions under which compliance with a social contract establishes an equilibrium in a society. It is assumed that society consists of two groups, one of which has a comparative advantage in using violence, whereas the other one has a comparative advantage in producing...

We introduce democratic mechanisms where individual utilities are not observable by other people at the legislative stage. We show that the combination of three rules can yield e±cient provision of public projects: first, flexible and double majority rules where the size of the majority depends...