The large and significant relationship between city population and wages has been well established in the agglomeration literature, and the influence of selection effects on this wage premium is important. This paper contributes new evidence to the understanding of this premium by using two...

We examine the effects of work-related disabilities on the earnings losses of disabled male workers. First, we analyze the extent of the wage losses of disabled workers who remain at their pre-injury job relative to disabled workers who leave their pre-injury job, using regression and bias...

Both marital status and computer usage on the job have been found to increase earnings by as much as two additional years of schooling. If correct, these findings suggest that factors other than long-term human capital investments are key determinants of earnings. Data on identical twins are...