Recessions appear to be times when the marginal rate of substitution between goods and workers’ time falls below the marginal product of labor. If so, the allocation of workers’ time is inefficient. I develop a model of households and production that reconciles cyclical movements in the marginal value of time and the marginal product. The model embodies the findings of research that the Frisch ...

Do employers substitute adults for children, or do they treat adults as complements to children? Any policy to reduce child labor depends on the answer to this question, but any empirical strategy to answer it must overcome two obstacles: (1) whatever program reduces child labor supply must have no direct impact on adult labor demand. (2) Any program that changes child labor supply will almost ...

Identification of the onset of true labor has been one of the most difficult and critical challenge facing obstetric in maternity care. Predicting when true labor will start and recognizing when labor actually starts is important for both normal and complex pregnancies. For normal pregnancy, onset of true labor is important for reducing hospital costs as it will avoid admission when mother is n...

We integrate local labor market data on worker flows (accession and separation rates), job flows (creation and destruction rates), employment levels, and earnings with MSA-level data on housing prices and local area unemployment, in order to study the local labor market dynamics associated with the U.S. housing price bubble of the late 2000s. We proceed to study the magnitude and timing of the ...

A distinctive contribution of the unemployment model of Diamond, Mortensen, and Pissarides is the creation of an economically coherent concept of labor-market tightness. In a tighter market, jobseekers find jobs more quickly and employers take longer to fill jobs. The evidence in this paper on individual job-finding rates and on job-filling rates of employers shows that a single index factor de...

In this paper, I develop a regression-based system of labor productivity equations which account for capital-embodied technological change and I incorporate this system into IDLIFT, a structural, macroeconomic input-output model of the U.S. economy. Builders of regressionbased forecasting models have long had difficulty finding labor productivity equations that exhibit the “Solowian” property t...

Chorea Gravidarum (CG) is a rare movement disorder characterized by rapid, irregular randomly distributed involuntary movements during pregnancy (Wild and Tabrizi 2007; Karageyim et al. 2002). The symptoms begin during the first trimester in 50% of cases, resolve spontaneously before labor in 33% of cases and in 66% post labor, but may reoccur during subsequent pregnancies. Rhabdomyolysis, hype...