We estimate a standard human capital earnings model, augmented to allow for different firm-specific wage premia. The earnings of an individual depend on her human capital bundle and the earnings mark-up of the firm she is currently working for. We use linked employer-employee data from Norway...

A model of semicollusion, where firms collude on prices and compete on capacities, is tailor-made to the characteristics of the Norwegian cement market and tested empirically on this particular market for the period 1927-1982. The results indicate that the rapid increase in capacity and thereby...

Two TV channels compete on programming with respect to both time schedule (continuous choice) and programme progile (discrete choice), with a directional constraint concerning time schedule (viewers cannot watch TV before they get home). We show how the relative importance of programme progile...

In a model of endogenous choice of location and endogenous aversion against inequality, we demonstrate that large pre-tax difference in income may lead to a residential segregation of rich and poor. Such segregation may reduce the social attachment between the groups in society, and reduce the...

The paper argues that this way fo distributing the right to tax presupposes the view that perticular relationships give rise to special obligations.The paper analyses different versions of this approach and discusses to what extent they are able to justify the main features of international tax...