Knowledge that Transforms

A review of previous analyses of labor supply effects of Social Security Disability Insurance (DI) concludes that estimates of labor supply effects and net social costs are upward biased because they ignore interactions between DI and other insurances. A model of optimal insurance, postinjury accommodations, and labor supply shows that reduction in labor supply and increase in consumption when disabled do not necessarily imply moral hazard. Optimal postinjury accommodations vary inversely with firm size. The Americans with Disabilities Act will reduce wages and labor supply of healthy workers, particularly in small firms. Effects on labor supply of the disabled are ambiguous.

This article argues that the negative relationship between weekly hours worked and the gross hourly wage rate is due to the provision of fringe benefits. As the total weekly wage increases, employers and employees avoid taxation by substituting wages with nontaxable, nonwage benefits. I produce a wage that incorporates the benefit effects and estimate the corresponding labor-supply elasticities. An estimator is presented for the wage/hours market locus and the structural labor-supply function. An empirical application indicates that an estimated negative labor-supply elasticity associated with the observed gross wage is reversed when the adjusted wage is employed.

In this paper we estimate the effects of industrial shifts in the 1970s and 1980s on the wages and employment of black and white males. We use micro Census data for 52 MSAs, and estimate effects separately by age and education group. The results show that industrial shifts did reduce demand for blacks and 1essskilled males in 1970s and 1980s. Demand shifts away from manufacturing, in particular, reduced employment and wages for black and white males. While the magnitudes of these effects are fairly small for many groups, they can account for one-third to one-half of the employment decline for less-educated young blacks in the 1970s. These results imply fairly large effects on the earnings of less-skilled males in the 1980s as well.

This paper tests for the existence of expectational effects in very disaggregate price equations. Price equations are estimated using monthly data for each of 40 products. The dynamic specification of the equations is also tested, including whether the equations should be specified in level

Tobin and Houthakker's work on consumer behavior under quantity rationing has been extended by many authors, especially through the use of duality theory. This paper uses duality theory to extend the work on demand theory under rationing to the case of producer behavior under quotas. These results permit estimation of otherwise unobservable market supply and demand structures. The structure of the farm economy operating under a tobacco quota system is estimated, and the theory is utilized to infer that the supply elasticity of tobacco would be about 7 .0 if the quotas were removed. Estimates such as this are not normally attainable without the theory outlined here, even though they are essential for the evaluation of policy changes.

This paper extends the work of Boyd (1987) by examining the question of efficiency in Yugoslavian agricultural production using the stochastic production frontier. We find the private sector produces with higher output efficiency than the social sector. Next, we examine regional efficiency differences. Our findings reinforce earlier analysis of the economic impact of regional development policy pursued in Yugoslavia. Less developed republics appeared unable to utilize efficiently the large volume of investment resources allocated from the more developed republics via the central government.

Despite the presence of anecdotal evidence linking regional economic growth and the presence of quality universities in such areas as the Silicon Valley in California and Route 128 in Boston, there have been few systematic studies of the relationship between universities and local economies. In this paper we examined the relationship between four measures of the quality or extent of activities of colleges and universities in an area and various measures of the local labor market activity, including employment, income and migration.

A calculation of the stochastic properties of consumption when income follows a fractional stochastic process, showing how this may explain excess-smoothness results noted in previous studies.

There is an old joke about economics which says that the questions stay the same, only the answers change. Though there is some truth in that idea, I would argue that over the past 50 years, there have been marked changes both in the questions and in the answers, but that many of these changes are still only imperfectly reflected in undergraduate textbooks.

Social security, provision of public sector services, job security legislation, minimum wages and centrally regulated (bargained) relative wages are important elements of the modern welfare state -- each designed, often quite successfully, to enhance economic security and to redistribute income. The consequences of these policies for the unemployment issue are the topic of this paper.