The Productivity Of Working Hours
Observations on munition workers, most of them women, are organized to examine the
relationship between their output and their working hours. The relationship is nonlinear: below an
hours threshold, output is proportional to hours; above a threshold, output rises at a decreasing rate as
hours increase. Implications of these results for the estimation of labor supply functions are taken up.
The findings also link up with current research on the effects of long working hours on accidents and