Fairness

What is Fairness in Behavioral Economics?

Fairness concerns how people judge the distribution of benefits and costs, the procedures used, and the treatment they receive. Preferences can include concern for others, reciprocity, or aversion to unequal outcomes. These concerns are not inherently irrational.

Evidence and models

Costly rejection in the ultimatum game

In the ultimatum game, one player proposes how to divide a sum of money and the other accepts or rejects the offer; rejection gives both players nothing. Imagine a $10 division in which the proposer keeps $9 and offers the responder $1: rejecting it costs the responder that $1 and also denies the proposer $9. This hypothetical offer illustrates costly rejection without claiming that everyone would reject it or that a particular share is universally unacceptable. Rejecting an offer sacrifices the responder’s immediate monetary payoff. That challenges a model concerned only with that payoff; it does not by itself violate every model of rational choice.

An inequity-aversion model

Fehr and Schmidt (1999) showed how a model in which some people dislike inequity can account for patterns in bargaining and cooperation. Their analysis also emphasizes how the economic setting changes which preferences determine behavior.

Does fairness mean equal shares?

Fairness need not mean equal shares in every situation. People can disagree about whether need, effort, contribution, or equal treatment should matter. For example, two employees may disagree about equal bonuses if one believes they contributed more. That is a question about what counts as a fair comparison, not just how much money each receives.

Why it matters

Pay, pricing and policy decisions distribute benefits and burdens. People can care about the amount they receive and about how that amount was decided. Treating every objection as irrational misses part of the preference you are trying to understand.