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The Timing of Labor Demand
by Ana Rute Cardoso, Daniel S. Hamermesh, Josť Varej„o
(December 2008)
published in: Annals of Economics and Statistics, 2012, 105/106, 15-34

Abstract:
We examine the timing of firms' operations in a formal model of labor demand. Merging a variety of data sets from Portugal from 1995-2004, we describe temporal patterns of firms' demand for labor and estimate production-functions and relative labor-demand equations. The results demonstrate the existence of substitution of employment across times of the day/week and show that legislated penalties for work at irregular hours induce firms to alter their operating schedules. The results suggest a role for such penalties in an unregulated labor market, such as the United States, in which unusually large fractions of work are performed at night and on weekends.
Text: See Discussion Paper No. 3885