We are pleased to announce that Woonerf Inc. was officially approved in June 2025 as a Licensed Assurance Provider for the internationally recognized AA1000 Assurance Standard (AA1000AS). This enables us to provide independent and professional assurance of both quantitative and qualitative Environmental, Social, and Governance (ESG) information. Our assurance services are conducted by Certified Sustainability Assurance Practitioners within our organization, ensuring high-quality services aligned with international standards.

 

 

 

Background: Japan’s First Sustainability Disclosure Standard by SSBJ

In March 2025, the Sustainability Standards Board of Japan (SSBJ) released Japan’s first sustainability disclosure standard. Under this new framework, companies are required to disclose sustainability-related information in their securities reports. Starting from the fiscal year ending March 2027, mandatory disclosure will be phased in based on market capitalization.

 

Key Features of Our Assurance Services
  • Alignment with International Standards: In addition to the SSBJ standard, our services comply with major global frameworks such as GRI and ISSB.
  • Comprehensive Verification: We verify not only the accuracy of quantitative data but also the validity of materiality assessments and stakeholder inclusiveness.
  • Enhanced Credibility: Third-party assurance improves transparency for investors and business partners, contributing to sustainable corporate value.

 

Looking Ahead

Since our founding in 2006, Woonerf Inc. has supported the acquisition of international third-party certifications, verifying compliance with broad environmental and sustainability standards. With the SSBJ standard becoming mandatory, sustainability performance is now a requirement across all industries. In response, we are expanding our consulting services to support companies in building robust disclosure systems.

 

Contact Us

For more information about our assurance services, please contact us via the form below:
Contact – Certification and ESG Consulting – Woonerf Inc.