This paper shows that models where preferences of individuals depend not only on their allocations, but also on the well-being of other persons, can produce both large and testable effects. We study the allocation of workers with heterogeneous productivities to firms. We show that even small...

The contractual, single-exchange framework in Coase (1960) contains the implicit assumption that exchange in property rights does not affect future transaction (i.e., trading) costs. This is pertinent for analyzing use externalities but limits our understanding of property institutions: a...