"In aggregate models, costs that penalise changes in investment--investment adjustment costs-- have been introduced to help account for a variety of business cycle and asset market phenomena. In this paper, we evaluate empirical evidence for these types of costs using US and UK industry data. We...

We show in a union-bargaining model that a decrease in the unemployment benefit level increases not only equilibrium employment, but also nominal wage flexibility, and thus reduces employment variations in the case of nominal shocks. Long-term wage contracts lead to highter expected real wages...