Glencore’s Purpose is responsibly sourcing the commodities that advance everyday life. Our suppliers are critical partners in our commitment to responsible sourcing.

How we work with our suppliers

We expect our suppliers to share our commitment to ethical, safe and responsible business practices and support our Values of safety, integrity, responsibility, openness, simplicity and entrepreneurialism. 

About our Supplier Code of Conduct


If you are interested in becoming a supplier, please reach out to the Glencore industrial asset or commodity department that you would like to work with.  

We lay out our requirements and expectations for you on a range of topics in our Supplier Code of Conduct. Contact your local Glencore industrial asset or commodity department if you would like further information.

We assess suppliers based on their risk and direct them to the most appropriate due diligence and management process for their risk level. This may include filling in a due diligence questionnaire. Our suppliers are required to provide Glencore with access to relevant information on reasonable request. 

Our due diligence processes consider the differing complexity, maturity and circumstances of our diverse supplier base. 

For suppliers of metals and minerals we conduct due diligence in accordance with the 5-Step due diligence framework defined in Annex I of the OECD Guidance (as defined in our Supplier Code of Conduct). We expand on our requirements for suppliers of metals and minerals further in Annex 1 of our Supplier Code of Conduct. 

We take a risk-based approach to requiring suppliers to provide evidence of their compliance to the requirements of our Supplier Code of Conduct, and we monitor suppliers’ compliance on an ongoing basis. 

Where required we provide training and additional resources for suppliers on the requirements of our Supplier Code of Conduct.

We work with our suppliers as necessary to communicate our expectations and build understanding of our requirements.

Please contact your local Glencore industrial asset or commodity department for further information on training.

Where we find instances of non-compliance by our suppliers with the requirements of our Supplier Code of Conduct, we investigate these incidents to understand causes and contributing factors, and we take appropriate action accordingly. Our suppliers are required to cooperate in the investigation and assessment of potential or actual adverse impacts and provide Glencore access to relevant information on reasonable request.

We collaborate with our suppliers and relevant stakeholders to address the deficiencies identified and mitigate identified potential or actual adverse impacts as appropriate. However, where we find that a supplier cannot or will not take actions to demonstrate compliance within an agreed timeframe, we may review our continuing relationship with that supplier up to and including termination of engagement.

We encourage our suppliers to report any concern relating to a breach of Glencore’s Supplier Code of Conduct to their local Glencore contact or through local complaints and grievance processes. Our industrial assets are required to operate grievance processes designed to meet the UN Guiding Principles effectiveness criteria, that local people are aware of and that local people can access easily. Where people have complaints or grievances, we aim, where possible, to investigate and resolve them at the local level. See for more details.

If a concern remains unresolved or a reporter feels uncomfortable using these local channels, the Glencore Raising Concerns Programme offers anonymous reporting channels for all Glencore employees, contractors, suppliers, business partners and other stakeholders. This includes our indirect suppliers. 

The Raising Concerns Programme is managed by Glencore’s Head Office in Switzerland, available to report concerns in various languages in a secure manner. Concerns may also be reported anonymously. Accessing Glencore’s Raising Concerns Programme is easy - Phone numbers are available too, and the number for use in various countries can be found on the programme’s web page. Emails can also be sent to

Archived Supplier Standards