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Public Economics Lectures Part 1: Introduction

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Baily-Chetty model: Second Best Problem<br />

Agents maximize expected utility, taking b and t(b) as given<br />

max eu(A + w h − t) + (1 − e)u(A + w l + b) − ψ(e)<br />

e<br />

Let indirect expected utility be denoted by V (b, t)<br />

Government’s problem is to maximize agent’s expected utility, taking<br />

into account agent’s behavioral responses:<br />

max V (b, t)<br />

b,t<br />

s.t. e(b)t = (1 − e(b))b<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 6: Social Insurance 42 / 207

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