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Public Economics Lectures Part 1: Introduction

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Aggregate Shocks as a Motivation for SI<br />

Private ins. (cross-sectional pooling) relies on idiosyncratic risks so<br />

those who are well off can pay those who are poor<br />

Government is the only entity able to coordinate risk-sharing across<br />

different groups that are all affected by negative shocks<br />

Inter-generational risk sharing required if everyone is poor at the same<br />

time<br />

<strong>Part</strong>icularly relevant for UI and maybe social security<br />

Less so for health-related shocks<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 6: Social Insurance 30 / 207

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