Although it is considered that the official statistics of Japan are high quality when compared internationally, in use of micro data, it is said that Japan is behind Western countries. Micro data use fails to progress because its use is severely restricted by the Statistics Act. Various proposals and efforts have been made to solve the problem. One of the concrete proposal is the trial offer of official micro data. This paper considers how the trial offer supported this problem, and the significance it had. Moreover, while forecasting the problem of use of the micro data under Statistics Act as revised in May 2007, the issue which should be considered in micro data use from now on are presented.
