The purpose of this paper is to introduce a modification of a standard four input production process where energy is used in an inefficient way due to partly unnecessary waste of energy. In this production process, R&D investment is an additional input in order to improve energy efficiency. It...

The objective of our analysis is to find out whether an increase in working time without pay compensation can be considered an adequate policy to reduce unemployment. From the perspective of economic theory the outcome is in general ambiguous: On the one hand, as the increase in working time...

Germany has committed itself to reducing its carbon emissions by 25 percent in 2005 as compared to 1990 emission levels. To achieve this goal, the government has recently launched an environmental tax reform which entails a continuous increase in energy taxes in conjunction with a...