Abstract
Because the Chemical Substance Release Control Law (PRTR Law) was enacted in 1999, each industry promoted their activities for reducing emissions of chemical substances.Even though the costs and method for reducing emissions of chemical substances are different within the industry, PRTR law enforces all industries together. Therefore the objective of this study is to compare productivity considering chemical substancemissions (negated productivity) for 10 industries in the Japanese manufacturing sector by using the Directional Distance Function and the Luenberger Productivity Index. From the results, the integrated productivity of 10 industries increased from 2001 to 2005. Furthermore, we also infer that many companies in this sample data applied cleaner production approach to reduce PRTR chemical substances.
