This article provides evidence that involuntary unemployment, and the segmentation of labour markets into firms offering "good" and "bad" jobs, may both arise as a consequence of contractual incompleteness. We provide a simple model that illustrates how unemployment and market segmentation may...

Promotions play an important role for the provision of incentives in firms. We analyze incentives in multistage elimination tournaments with controlled laboratory experiments. In our two main treatments, we compare a two-stage tournament to a one-stage tournament. Subjects in the two-stage...