Abstract
MLIT has, in the last few years, established guidelines for the modification of conditions in public works contracts in Japan in order to improve fairness and transparency in the public works sector and secure the quality of the infrastructure in Japan. The author analyzed trends by questionire surveys for the purpose of verifying the effectiveness of these measures. Then, we have presented case studies exemplifying how actual negotiations on design change and modification of contract conditions are handled and picked out some of the existing problems based on the analysis of these case studies.
To solve thease problems, we proposed 3 measures; (1) Development of the case studies database, (2) Promotion and certification system for these guidelines and (3) Promotion of fairness of contract administration system and operation system by reciprocal check between the owner and the contractor. Then, the auther illustrate the necessity of improvement of thease owner's guidelines and the necessity of providing guidelines geared more towards accommodating the views of the contractor to enable these problems to be solved.
