This document outlines guidelines for environmental reporting in Japan. It provides definitions and objectives for environmental reporting, which aims to promote communication about environmental efforts, fulfill accountability, and provide useful information to stakeholders. The guidelines describe the functions of reporting, including disclosing information, aiding decision making, and promoting improvement through pledges and reviews. It also outlines general principles, components, and elements that should be included in reports, such as policies, programs, impacts, and management systems. The intended readers are major Japanese organizations, who are encouraged to include this guidance while also expressing their own characteristics.