Moroni, Sofia; Swinkels, Jeroen - In: Journal of Economic Theory 150 (2014) C, pp. 668-682
We provide a new class of counter-examples to existence in a simple moral hazard problem in which the first-order approach is valid. In contrast to the Mirrlees example, unbounded likelihood ratios on the signal technology are not central. Rather, our examples center around the behavior of the...