Free-Rider Problem

Public goods and the logic of free riding

Public goods such as national defense, streetlights and basic research make it hard to exclude those who do not pay (non-excludability), and one person's use does not reduce another's (non-rivalry). In setting out the conditions for efficient provision of such goods, Paul Samuelson (1954) noted that people have no incentive to reveal their true preferences, so markets fail to supply the right amount. For each individual the most rational choice is to enjoy the benefits while waiting for others to pay; if everyone does so, the public good is underprovided. The structure mirrors the prisoner's dilemma, in which individual rationality clashes with group interest, and links to the overuse of shared resources in the tragedy of the commons (Hardin, 1968) and the underproduction of positive externalities.

Olson's logic of collective action

In The Logic of Collective Action (1965), Mancur Olson overturned the assumption that people with common interests will naturally act together. The larger the group, the smaller each member's effect on the outcome and the harder it is to monitor one another, so free riding grows. Small groups, such as a few producers, organize easily, while large, dispersed groups such as consumers or taxpayers struggle to organize even when their shared stake is large. Olson argued that large groups survive only with selective incentives, benefits available only to members or sanctions on non-participants; union closed shops and the insurance benefits of professional associations are examples. Chamberlin (1974) refined the argument, showing that the effect of group size depends on the nature of the good. Olson's theory became a starting point for research on interest-group politics and social movements.

Experimental evidence and institutional solutions

Contrary to the theory, in laboratory public goods games people initially contribute 40 to 60 percent of their endowment, though contributions tend to decline with repetition (Ledyard, 1995). Marwell and Ames (1981) reported the striking finding that economics students free ride notably more. Fehr and Gächter (2000) showed that allowing participants to punish free riders, even at a cost to themselves, sustains high contributions, and Andreoni (1990) explained giving through the warm glow donors feel. Elinor Ostrom (1990) analyzed fisheries, forests and irrigation systems that local communities had governed for long periods through principles such as clear boundaries, mutual monitoring and graduated sanctions, showing that self-governing institutions rather than states or markets can overcome free riding; she received the 2009 Nobel Prize in economics. In mechanism design, Clarke (1971) and Groves and Ledyard (1977) proposed schemes that induce truthful preference revelation. Within firms, Holmström (1982) analyzed free riding in team production, and Grossman and Hart (1980) free riding by small shareholders in takeovers.

FAQ

What is the free-rider problem in simple terms?

When a benefit goes to everyone, each person thinks someone else will pay for it and holds back, so in the end the benefit is not produced in sufficient quantity.

How can the free-rider problem be addressed?

Research has examined government provision funded by taxes, selective incentives that reward only contributors, community monitoring and sanctions, and mechanisms designed to make people reveal their true preferences.

Sources reviewed: 2026-10-26

References

1. Samuelson, P. A. (1954). The pure theory of public expenditure. Review of Economics and Statistics, 36(4), 387–389.
2. Olson, M. (1965). The Logic of Collective Action: Public Goods and the Theory of Groups. Cambridge, MA: Harvard University Press.
3. Hardin, G. (1968). The tragedy of the commons. Science, 162(3859), 1243–1248.
4. Ostrom, E. (1990). Governing the Commons: The Evolution of Institutions for Collective Action. Cambridge: Cambridge University Press.
5. Clarke, E. H. (1971). Multipart pricing of public goods. Public Choice, 11(1), 17–33.
6. Groves, T., & Ledyard, J. (1977). Optimal allocation of public goods: A solution to the "free rider" problem. Econometrica, 45(4), 783–809.
7. Marwell, G., & Ames, R. E. (1981). Economists free ride, does anyone else? Journal of Public Economics, 15(3), 295–310.
8. Fehr, E., & Gächter, S. (2000). Cooperation and punishment in public goods experiments. American Economic Review, 90(4), 980–994.
9. Andreoni, J. (1990). Impure altruism and donations to public goods: A theory of warm-glow giving. Economic Journal, 100(401), 464–477.
10. Ledyard, J. O. (1995). Public goods: A survey of experimental research. In J. H. Kagel & A. E. Roth (Eds.), The Handbook of Experimental Economics (pp. 111–194). Princeton: Princeton University Press.
11. Grossman, S. J., & Hart, O. D. (1980). Takeover bids, the free-rider problem, and the theory of the corporation. Bell Journal of Economics, 11(1), 42–64.
12. Holmström, B. (1982). Moral hazard in teams. Bell Journal of Economics, 13(2), 324–340.
13. Chamberlin, J. (1974). Provision of collective goods as a function of group size. American Political Science Review, 68(2), 707–716.