Law and Economics Commons^™

Private Production Of Public Goods: Liability For Unrequested Benefits, Ariel Porat

Michigan Law Review

This Article explores why the law treats negative externalities (harms) and positive externalities (benefits) differently. Ideally, from an economic perspective, both negative and positive externalities should be internalized by those who produce them, for with full internalization, injurers and benefactors alike would behave efficiently. In actuality, however, whereas the law requires that injurers bear the harms they create (or wrongfully create), benefactors are seldom entitled to recover for benefits they voluntarily confer on recipients without the latter's consent ( "unrequested benefits"). One aim of this Article is to explore the puzzle of the law's differing treatment of negative and positive …