Sustainability Report Assurance

As the number of companies producing sustainability reports grows, there is increasing pressure from stakeholders and authorities for a guarantee of the reliability and accuracy of the report. To provide this guarantee, a third-party assurance can be carried out on the sustainability report.

sustainability report assuranceReport assurance provides stakeholders with the confirmation that the company’s commitment to sustainability and social responsibility is effective, truthful and transparent. It is also an important means for the company to assess the strengths and weaknesses of its sustainability report and lead to improved reporting and CSR practices.


How we assist you

Using our established and effective methodology, Ere-S verifies the systems and performance information disclosed in your sustainability report. As part of the engagement, we also make recommendations on how to improve report content and processes in accordance with reporting and sustainability standards and with stakeholder engagement criteria.

 Our assurance methodology

1. Preparation

Upon receiving the report draft and other sustainability-related information from your company, Ere-S produces an assurance protocol customised to your report and needs, which sets out the level and scope of assurance, work plan and deliverables.

2. Interview set up

Ere-S liaises with you to identify the key departments and data owners to interview, and co-ordinate site visits if necessary. Before the interviews and visits, our assurance team provides a comprehensive list of the report elements to be verified and customised check lists for each of the data owners outlining the documentation and evidence required for the assurance process.

3. Data verification

Our assurance team conducts a thorough assessment of the information from the data owners and, where necessary, stakeholders. This includes reviewing documentation and evidence on the agreed requirements, such as GRI or AA1000AS criteria.

4. Recommendations

Interim feedback is provided by Ere-S in order for you to make required corrections or improvements to your sustainability report. These recommendations are based on GRI, AA1000 and other CSR guidelines, best practices in your industry, and our team’s knowledge of the local and international developments in sustainability reporting.

5. Assurance statement and report

Assurance statement and report – Once our assurance team is satisfied with the accuracy of the reviewed information and that all our recommendations have been incorporated in the sustainability report, Ere-S issues an assurance statement that validates the disclosed information.

In addition to the assurance statement, which is for inclusion in the sustainability report, Ere-S provides you with a comprehensive internal assurance report, which lists all the steps and findings of the engagement as well as more in-depth recommendations to further improve the CSR framework and reporting process in future.

Ere-S can also carry out pre-assurance on your sustainability framework (in its entirety or in part), to evaluate processes and performance before the production of the sustainability report. Pre-assurance allows more time to apply our assurance team’s recommendations. It also provides your own reporting team and data owners with more confidence as they prepare for assurance in the final phase of the reporting exercise.

CSR project evaluation
More specifically, Ere-S can evaluate your social and environmental projects, whether run by you or your external partners, to confirm that their performance and impact fulfils your requirements and those of the target groups.


The Ere-S quality guarantee

Ere-S assurance methodology and criteria are based on ISAE 3000, AA1000AS and GRI standards and allow for a comprehensive and efficient verification. Our clients consistently gain value from our recommendations, whether through the amendment of report content or the improvement of CSR and data measurement processes.

Ere-S is an AA1000 Licensed Assurance Provider and our assurance engagements are supervised by a Certified Lead Sustainability Assurance Practitioner. All information that we process is kept confidential and stored in an encrypted format on our computers. For all engagements, the members of the assurance team are required to follow our Assurance Code of Conduct.

AA1000-Licensed-Assurance 68

Please note that we do not simultaneously provide consulting and assurance services to the same company.

      Ere-S current and past clients include:

  • CDL-logo
  • singtel-logo
  • Senoko-logo
  • FujiXeroxSingapore-logo
  • PowerSeraya-logo
  • Keppel-Land-logo
  • capitaland-logo
  • merck-logo
  • worldvision-logo
  • worldvision-logo
  • SIA-logo
  • Optus logo
  • WWF logo
  • KTT logo

       Our latest engagements

We are carbon neutral

ISO 26000

The latest guidelines on implementing social and environmental responsibility.

GRI Framework

A comprehensive set of guidelines for sustainability reporting.


Setting higher criteria for the credibility and quality of sustainability reports and CSR systems.

First Steps to CSR Journey

Key to start a CSR journey is to understand issues that are critical to the core business and stakeholders.  It is also important to establish a long-term strategy based on the combination of core competencies and CSR to create business competitiveness.