It is argued that a PAYGO system may have useful allocative functions in that it serves as an insurance against not having children and as an enforcement device for rotten kid' who are unwilling to pay their parents a pension. It is true that the system has amoral hazard effect in terms of...

From the perspective of parents, redistributive taxation can be seen as social insurance for their children, for which no private alternative exists. Because private insurance comes too late during a person's life, it cannot cover the same risks as social insurance. Empirically, 85% of social...

The concentration of risk within the financial system leads to systemic instability. We propose a theory to explain the structure of the financial system and show how it alters the risk taking incentives of financial institutions when the government optimally intervenes during crises. By issuing...