NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

The Impact of Employment during School on College Student Academic Performance

Jeffrey S. DeSimone

NBER Working Paper No. 14006
Issued in May 2008
NBER Program(s):   ED   LS

This paper estimates the effect of paid employment on grades of full-time, four-year students from four nationally representative cross sections of the Harvard College Alcohol Study administered during 1993-2001. The relationship could be causal in either direction and is likely contaminated by unobserved heterogeneity. Two-stage GMM regressions instrument for work hours using paternal schooling and being raised Jewish, which are hypothesized to reflect parental preferences towards education manifested in additional student financial support but not influence achievement conditional on maternal schooling, college and class. Extensive empirical testing supports the identifying assumptions of instrument strength and orthogonality. GMM results show that an additional weekly work hour reduces current year GPA by about 0.011 points, roughly five times more than the OLS coefficient but somewhat less than recent estimates. Effects are stable across specifications, time, gender, class and age, but vary by health status, maternal schooling, religious background and especially race/ethnicity.

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Document Object Identifier (DOI): 10.3386/w14006

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