If you manufacture in India and supply products to buyers in Europe, the United States, or other international markets, you may have noticed that buyer requirements are changing. Purchase orders and supplier assessments increasingly include questions about carbon emissions, labour practices, waste management, human rights, and environmental compliance.

This growing focus on Supplier ESG Due Diligence means manufacturers are increasingly expected to provide reliable information about their own operations and, in some cases, their supply chains. For Indian manufacturers working with global buyers, being prepared for these ESG requirements can help strengthen business relationships and improve competitiveness.

This guide by UA Consultants explains what supplier ESG due diligence involves, why global buyers are increasing their ESG expectations in 2026, and what Indian manufacturers can do to improve their ESG readiness.

What is Supplier ESG Due Diligence?

Supplier ESG due diligence is the process used by buyers to assess how suppliers identify and manage Environmental, Social, and Governance (ESG) risks. Instead of focusing only on product quality, pricing, and delivery, global buyers may also evaluate a supplier's environmental performance, labour conditions, health and safety practices, human rights policies, and business ethics.

Growing sustainability regulations and corporate reporting requirements are encouraging large companies to pay closer attention to ESG risks within their supply chains. In the European Union, for example, the Corporate Sustainability Due Diligence Directive (CSDDD) establishes due-diligence requirements for certain large companies, with implementation taking place in stages.

As a result, Indian manufacturers may increasingly receive ESG questionnaires, supplier assessments, document requests, and sustainability data requests from international customers.

Why Global Buyers Expect This in 2026

ESG assessments are no longer limited to a company's own operations. Global buyers are increasingly looking at supplier-related risks as part of their wider supply chain due diligence.

1. Regulatory Pressure

Sustainability and supply-chain regulations are encouraging large companies to understand and manage ESG risks connected to their business relationships. This increases the need for suppliers to provide accurate ESG information.

2. Investor and Consumer Expectations

Global brands face growing expectations from investors, customers, and other stakeholders to demonstrate responsible sourcing and better environmental and social practices.

3. Supply Chain Risk Management

Buyers want to identify risks related to labour practices, environmental impacts, health and safety, human rights, and regulatory compliance before these issues affect their operations or reputation.

4. Competitive Advantage

Manufacturers that can demonstrate strong ESG practices, reliable documentation, and transparent supplier information may be better positioned when competing for business with international buyers.

What Global Buyers Actually Look For

ESG due diligence questionnaires can vary from one buyer to another, but many cover similar environmental, social, and governance areas. Indian manufacturers should be prepared to provide relevant information and supporting documents on the following:

Environmental Practices

1. Energy consumption and efforts to reduce carbon emissions 
2. Water usage and wastewater management 
3. Waste management, recycling, and disposal practices 
4. Chemical handling and compliance with applicable environmental requirements 

Social and Labour Practices

1. Fair wages and working hours in line with applicable Indian labour requirements 
2. Workplace health and safety systems 
3. Measures to prevent child labour and forced labour 
4. Worker grievance and complaint mechanisms 

Governance and Ethics

1. Anti-bribery and anti-corruption policies 
2. Accurate record-keeping and documentation 
3. Sub-supplier and raw material traceability 
4. Policies and processes for responsible business practices

How to Identify Supplier Risks and Gaps

Before responding to a buyer's ESG questionnaire, manufacturers should understand where their current gaps exist. A structured supplier ESG gap assessment can help review three key areas:

Documentation Gaps

Do you have written policies covering labour, environmental practices, health and safety, and business ethics, or are these practices followed without proper documentation?

Data Gaps

Can you provide reliable data on energy consumption, water use, carbon emissions, and waste generation? If data is not regularly measured or recorded, this can make ESG reporting more difficult.

Sub-Supplier Visibility

Do you have information about your raw material suppliers, subcontractors, and job-work vendors, or does your ESG oversight stop at your own factory?

Identifying these gaps early gives manufacturers time to improve their policies, records, data collection, and supplier controls before responding to a buyer's ESG assessment. A structured gap assessment can also help companies understand which areas need the most attention.

How a Supply Chain Audit and ESG Consulting Help

A supply chain audit combined with ESG consulting can help manufacturers understand their current ESG performance and identify areas that need improvement. The process may include:

1. Assessing environmental, labour, health and safety practices at the facility 
2. Comparing current practices with common global buyer ESG requirements 
3. Identifying immediate improvements and longer-term actions 
4. Improving the documentation and data systems required for ESG assessments 
5. Preparing supporting information for buyer reviews and third-party audits 

This approach can improve a manufacturer's readiness for supplier ESG questionnaires while also helping identify opportunities to improve resource efficiency, reduce waste, and manage operational risks.

Common Mistakes Manufacturers Make

  Waiting until a buyer sends an ESG questionnaire before preparing 

  Treating ESG compliance as a one-time documentation exercise 

  Focusing only on the factory while overlooking risks in the wider supply chain 

  Providing ESG information without having proper records or evidence to support it

How UA Consultants Can Help

UA Consultants has supported Indian businesses with environmental and sustainability compliance since 2001. Our ESG Consulting and Supply Chain Auditing services help manufacturers understand their ESG risks, assess gaps in environmental, social, and governance practices, and improve the systems buyers expect. We help businesses strengthen ESG documentation, data collection, supplier monitoring, and compliance processes to meet global buyer requirements.

Whether you are responding to your first supplier ESG questionnaire or looking to improve an existing compliance programme, UA Consultants provides practical guidance to help you identify gaps, organise the required information, and prepare your business for buyer assessments and third-party audits.

Frequently Asked Questions (FAQs)

1.Which manufacturers need to worry about supplier ESG due diligence?

Indian manufacturers supplying global buyers, large brands, or international markets may receive ESG questionnaires or sustainability data requests. Requirements can vary by buyer, industry, and supply chain.

2. What happens if we cannot answer a buyer's ESG questionnaire well?

Incomplete or unsupported responses may lead to additional questions, requests for evidence, or further buyer assessment. Strong ESG documentation can help suppliers respond more confidently to buyer requirements.

3. Do we need to check our own suppliers' ESG practices too?

In many cases, yes. Global buyers may ask suppliers for information about raw material suppliers, subcontractors, and other business partners to better understand ESG risks within the supply chain.

4. How long does it take to become ESG-ready for buyer audits?

The time required depends on the company's current systems and identified gaps. A supplier ESG gap assessment can help determine what documentation, data, policies, and improvements are needed before a buyer assessment.

Final Thoughts

Supplier ESG due diligence is becoming an increasingly important part of working with global buyers. Indian manufacturers may need to provide reliable information about their environmental practices, labour standards, governance systems, and supply chain. Preparing early with proper ESG documentation, data systems, supplier oversight, and internal processes can help manufacturers respond to buyer requirements more effectively. It can also strengthen their readiness for future ESG assessments and supply chain audits. 

Want to understand where your factory stands on ESG readiness? Get in touch with UA Consultants for professional ESG consulting and supply chain audit support.