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Public Economics Lectures Part 1: Introduction

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Commitments Model: Implications for UI<br />

Commitments amplify risk aversion<br />

Ex: 50% food, 50% housing<br />

Suppose unemployed agent forced to cut expenditure by 10%<br />

Then have to cut food cons by 20%, leading to larger welfare loss<br />

Model of commitments suggests that γ might actually exceed 4 for<br />

unemployment shocks<br />

γ 1 2 3 4 5 10<br />

∗<br />

0 0.05 0.31 0.45 0.53 0.7<br />

b<br />

w<br />

Problem: γ hard to estimate precisely by context<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 6: Social Insurance 70 / 207

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