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Marek Kapička, Efficient Allocations in Dynamic Private Information Economies with Persistent Shocks: A First-Order Approach, The Review of Economic Studies, Volume 80, Issue 3, July 2013, Pages 1027–1054, https://doi.org/10.1093/restud/rds045
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Abstract
This article studies efficient allocations in a dynamic private information economy with a continuum of idiosyncratic shocks that are persistent. I develop a first-order approach for this environment and show that the problem has a simple recursive structure that relies on only a small number of state variables, making the problem tractable. I find sufficient conditions that guarantee that the first-order approach is valid. To illustrate the first-order approach I numerically compute the efficient allocations in a Mirrleesean economy with productivity shocks that follow a random walk and verify the validity of the first-order approach. I show that persistent shocks create a new trade-off where the social planner decreases the informational rent of the agent today at the cost of providing higher insurance in the future.