Sleep and the Allocation of Time
Jeff E. Biddle, Daniel S. Hamermesh
Journal of Political Economy, Vol. 98, No. 5, Part 1 (Oct., 1990), pp. 922-943"

Using aggregated data for 12 countries, a cross section of microeconomic data, and a panel of households, we demonstrate that increases in time in the labor market reduce sleep. Our theory of the demand for sleep differs from standard models of time use by assuming that sleep affects wages by affecting labor market productivity. Estimates of a system of demand equations demonstrate that higher wage rates reduce sleep time among men but increase their waking nonmarket time by an equal amount. Among women the wage effect on sleep is negative but very small.


Who comes up with these things?!