GPSNR Assurance System – Assessment Service Provider Application

JANUARY 2026 

ISSUED BY 
Global Platform for Sustainable Natural Rubber 

Introduction & Background 
The Global Platform for Sustainable Natural Rubber (GPSNR) is an international, multi-stakeholder, voluntary membership initiative seeking to lead improvements in the socioeconomic and environmental performance of the natural rubber value chain. Members of the platform include tire manufacturers, rubber suppliers and processors, vehicle makers and NGOs. Representatives from each of these stakeholder groups have contributed to the development of the Singapore-based platform and the wide-reaching set of priorities that will define strategy and objectives 

The GPSNR Assurance System, designed by Assurance Services International (ASI) and for GPSNR members, is a risk-based framework that supports credible and independent assurance processes. It enables companies to identify and mitigate human rights and environmental risks within their supply chains, undergo third-party verification, and report transparently on their progress through credible claims. The details of which can be found at this link. 

The Engagement 
The GPSNR Secretariat is seeking qualified organizations and individual professionals to become GPSNR Assessment Service Providers (ASPs). Approved ASPs will conduct impartial and independent third-party assessments in accordance with GPSNR’s procedures and requirements. 

Selected ASPs will be responsible for delivering independent assurance assessments for GPSNR member companies, following GPSNR’s approved Assurance System methodologies and procedures. The engagement includes participation in GPSNR training and oversight processes, adherence to the GPSNR Assurance Service Provider Agreement, and maintenance of competence and impartiality throughout the duration of approval. 

Training for pre-approved ASPs is expected to commence in the first quarter of 2026, with assessments scheduled to begin thereafter upon completion of training and formal approval. 

GPSNR welcomes applications from qualified organizations or individuals who:

• Are legally registered and in good standing; 
• Have demonstrable experience in sustainability assurance, auditing, or related compliance assessments; 
• Can maintain independence, integrity, and confidentiality in delivering assessment services; and 
• Are willing to undergo GPSNR’s approval and oversight process. 

Applicants may include individual contractors, small-sized ASPs (with 5 or fewer full-time equivalent personnel), or large-sized ASPs (with more than 5 full-time equivalent personnel). 

Submission Guidelines & Requirements
The following submission guidelines & requirements apply: 

1. Applications will be considered only from individuals or organizations with experience relevant to this project.
   
   
2. All applicants (individuals or organisations) are required to list the individual(s) applying to be approved as an Assessment Service Provider.

3. Applicants must provide evidence of previous relevant work or experience, along with any other required supporting documents.

4. Applicants must confirm that they have read and agree to the GPSNR ASP Agreement Terms and Conditions.

5. Applications must be signed by an authorized representative.

6. Applications will only be considered upon receipt of the non-refundable application fee. An invoice will be issued and must be paid within 30 days of issuance. Further details are provided in the fee schedule.

7. More detailed guidance and supporting information about GPSNR procedures, assessment methodology, and training will be provided to applicants who successfully pass the pre-approval stage of the application process.

8. Applications must be received prior to the 27th of February 2026 to be considered. Applications should be submitted to natalie.low@gpsnr.org for consideration.  

Project Timelines 

Evaluation Factors 

GPSNR will evaluate applicants based on the following factors: 

1. Responsiveness to the requirements set forth

2. Relevant past performance/ experience

3. Provision of relevant documents

4. Technical expertise/experience  
   

Download ASP application form here: 

Download ASP agreement terms and conditions here: 

Download Assurance assessment workflow here: