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Public Economics Lectures Part 1: Introduction

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Why have social insurance?<br />

Motivation for insurance: reduction in risk for risk-averse individuals<br />

Unemp Ins: risk of involuntary unemployment<br />

Workers’comp and DI: risk of injuries/disabilities<br />

Social Security annuity: risk of living too long<br />

But why is government intervention needed to provide this<br />

insurance?<br />

Possible sources of market failure here:<br />

1 Informational problems (adverse selection)<br />

2 Individual optimization failures (myopia/improper planning)<br />

3 Macroeconomic shocks<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 6: Social Insurance 9 / 207

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