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Rawlsian Assignments

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  • Tom Demeulemeester
  • Juan S. Pereyra

Abstract

We study the assignment of indivisible goods to individuals when monetary transfers are not allowed. Previous literature has mainly focused on efficiency (from both ex-ante and ex-post perspectives) and individually fair assignments. As a result, egalitarian concerns have been overlooked. We draw inspiration from the assignment of apartments in housing cooperatives, where families consider egalitarianism of assignments as a first-order requirement. Specifically, they aim to avoid situations where some families receive their most preferred apartments while others are assigned options ranked very low in their preferences. Building on Rawls' concept of fairness, we introduce the notion of Rawlsian assignment. We prove that a unique Rawlsian assignment always exists. Furthermore, the Rawlsian rule is efficient and anonymous. To illustrate our analysis, we use preference data from housing cooperatives. We show that the Rawlsian rule substantially improves, from an egalitarian perspective, both the probabilistic serial rule, and the rule currently used to assign apartments in the housing cooperatives.

Suggested Citation

  • Tom Demeulemeester & Juan S. Pereyra, 2022. "Rawlsian Assignments," Papers 2207.02930, arXiv.org, revised Sep 2023.
    • Handle: RePEc:arx:papers:2207.02930
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    References listed on IDEAS

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