This article analyses the relevance of the extensive and the intensive margin of labour adjustment over the business cycle in Germany and in the United States. Previous research has found that, firstly, the extensive margin dominates and that, secondly, the relative relevance of the two margins...

The analysis of diffusion processes in financial models is crucially dependent on the form of the drift and diffusion coefficient functions. A methodology is proposed for estimating and testing coefficient functions for ergodic diffusions that are not directly observable. It is based on...