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<table width="100%" summary="page for LaborSupply"><tr><td>LaborSupply</td><td align="right">R Documentation</td></tr></table>

<h2>Wages and Hours Worked</h2>

<h3>Description</h3>


<p>A panel of 532  observations  from 1979  to 1988
</p>
<p><EM>number of observations</EM> :  5320
</p>


<h3>Usage</h3>

<pre>data(LaborSupply)</pre>


<h3>Format</h3>

<p>A data frame containing :
</p>

<dl>
<dt>lnhr</dt><dd><p>log of annual hours worked</p>
</dd>
<dt>lnwg</dt><dd><p>log of hourly wage</p>
</dd>
<dt>kids</dt><dd><p>number of children</p>
</dd>
<dt>age</dt><dd><p>age</p>
</dd>
<dt>disab</dt><dd><p>bad health</p>
</dd>
<dt>id</dt><dd><p>id</p>
</dd>
<dt>year</dt><dd><p>year</p>
</dd>
</dl>



<h3>Source</h3>


<p>Online complements to Ziliak (1997).
</p>
<p>Journal of Business Economics and Statistics web site: <a href="http://www.amstat.org/publications/jbes/">http://www.amstat.org/publications/jbes/</a>.
</p>


<h3>References</h3>


<p>Cameron, A.C. and P.K. Trivedi (2005) <EM>Microeconometrics : methods and applications</EM>, Cambridge, pp. 708&ndash;15, 754&ndash;6.
</p>
<p>Ziliak, J.P. (1997) &ldquo;Efficient Estimation With Panel Data when Instruments are Predetermined: An Empirical Comparison of Moment-Condition Estimators&rdquo;, <EM>Journal of Business and Economic Statistics</EM>, <B>419&ndash;431</B>.
</p>


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