Young highly educated workers developed in the 70's and 80's a preference for working in larger cities. As a consequence highly educated young workers in 1990 were over-represented in cities, in spite of the lower wage premium they earned for working in crowded metropolitan areas if compared to...

Two alternative relative compensation schemes are compared with respect to total output that can be generated at a given sum of salaries. While the promotion regime guarantees that any salary increase is permanent, the premium system allows a reduction in the income of an agent to the base...