Abstract
The media coverage could have a certain influence on the directionality of the Japanese public policy. In this paper, the causes of bias over public works reports which had been revealed in existing researches are extracted through interviewing with reporters by the questions such as “why newspaper criticize public works so hard”. As a result, it was found that the media was influenced by governmental offices, and particularly the ministry of finance. Reporters and editors tend to write what their superior is implying. Furthermore, the media is afraid of complaints from their readers even if they are small numbers. It was also suggested that the media was influenced by the situation of public opinions.
