Impact assessments and strategic partnerships for testing a legislative proposal under real life conditions are very important elements in the legislative process to support the initiative of the European institutions for "better law making". Identifying the mechanisms and the impact of a new legislative act on those parties directly affected by it should not only be used as facile justification "ex post" but as a tool to check the workability and effectiveness of the proposed legal text. Timing and composition of the working group managing the project are crucial success factors to achieve better understanding of the applicability and the potential effects on social, ecological and economical aspects. A firm commitment of all involved parties is essential to avoid seriously conflictive discussions and controversial communication to the public which basically undermines the good work commenced on common ground. However, transparency in the entire process does not guarantee a common interpretation of the final results.