Merger efficiencies provide the primary justification for why mergers of competitors may benefit consumers. Surprisingly, there is little evidence that efficiencies can offset incentives to raise prices following mergers. We estimate the effects of increased concentration and efficiencies on...

Retrospective analyses of hospital mergers may be uniquely valuable because they speak directly to two important issues - the methods used for delineating relevant geographic markets in hospital merger analysis, and the implications of not-for-profit status on post-merger hospital pricing - that...

All public policies regarding taxation and the redistribution of income rely on assumptions about the long-run effect of wages rates on labour supply. The variation in existing estimates calls for a simple, natural experiment in which men can change their hours of work, and in which wages have...