We consider the problem of allocating a single object to the agents with payments. Agents have preferences that are not necessarily quasi-linear. We characterize the class of rules satisfying pairwise strategy-proofness and non-imposition by the priority rule. Our characterization result remains...

Recent research has argued that the COVID-19 shock has also brought about a reallocation shock. We examine the evidence for such an occurrence in the United States, taking a broad perspective. We first consider micro data from CPS and JOLTS; there is no noticeable uptick in occupation or sector...

We analyse the allocation of face masks with the goal of minimizing mortality during a pandemic through airborne transmission. When the initial distribution of masks is private information, the optimal allocation achieved by a sophisticated mechanism in most cases maximizes the coverage rate by...

Auctions as a mechanism for allocating advertising positions for specific keywords entered by search engine users are used routinely by numerous firms. Considerable research has been conducted to ascertain auction formats that generate the greatest expected seller’s revenue and are also...

We introduce a new notion of ex-post efficiency for random assignment problems, namely ex-post rank efficiency that gives a maximal number of agents their favored objects. An ex-post rank efficient random assignment is a lottery over rank efficient deterministic assignments, in the sense of...

We introduce (strict) favoring upper ranks, which is an extension of favoring higher ranks for random assignments. We demonstrate that ex-post favoring ranks implies (strict) favoring upper ranks, and envy-freeness implies favoring upper ranks. Moreover, for at least four agents, no mechanism...

We examine the effect of size-dependent policies in developing economies by focusing on a setof regulations that are applicable to firms with 20 or more formal employees in Peru. Firms canadjust to the regulations by (a) reducing their size, (b) shifting employment composition, or (c)splitting...