Sections 8(a)(3) and 8(a)(5) of the National Labor Relations Act prohibit a firm from unilaterally increasing the wage it pays the union during the negotiation of a new wage contract. To understand this regulation, we study a counterfactual model where the firm can unilaterally increase wages...

We introduce a perfect price discriminating (PPD) mechanism for allocation problems with private information. A PPD mechanism treats a seller, for example, as a perfect price discriminating monopolist who faces a price schedule that does not depend on her report. In any PPD mechanism, every...

We introduce a subsidized Vickrey auction for cost sharing problems. Although the average, marginal, and serial cost sharing mechanisms are budget-balanced, they are not allocatively efficient and they do not induce players to truthfully reveal their values as a dominant strategy. The...

In this paper, we study the incentives for market concentration of (online and traditional) auction houses. Would sellers and buyers be better off if two separate auction houses merged? We suppose that each auction house has a separate clientele of sellers and buyers. Sellers value their...