Sedex 4-Pillar Audit: Why Global Buyers Are Insisting on It Over 2-Pillar

More and more global buyers are asking suppliers to complete a Sedex 4-Pillar Audit instead of a 2-Pillar Audit. The 4-Pillar Audit covers four areas: labour practices, health and safety, the environment, and business ethics. As ESG becomes more important and global supply chains face closer checks, buyers need a better understanding of the risks linked to their suppliers. 

If the retailer or brand simply asks you to upgrade to 4-Pillar Audit from 2-Pillar, there is definitely a trend. Buyers in the apparel, food, packaging, and houseware industries tighten their requirements towards their suppliers.

In this article, we describe what the audit includes, what the difference is between 4-Pillar and 2-Pillar audits, buyer expectations, and the preparation process. We help suppliers pass this stage of their development with Legal4sure and that’s why we have included common mistakes.

What Is a Sedex 4-Pillar Audit?

Definition: Sedex 4-pillar audit refers to SMETA (Sedex Members Ethical Trade Audit) which looks into the following 4 aspects of audit – labour practice, health & safety, environment, and business ethics. The audit is based on ETI Base code and shared with the buyers through Sedex.

Sedex is a membership organization globally that assists companies with managing their responsible sourcing data. SMETA is the auditing methodology and according to industry sources, more than 60,000 organizations use this methodology.

The auditors use the ETI Base Code which covers issues like freely chosen employment, no child labour, living wages, safe working condition and many more. Only one audit report can be shared with different buyers.

Sedex 2-Pillar vs 4-Pillar Audit: What’s the Difference?

While a Sedex 2-Pillar audit assesses labor standards and health and safety, a 4-Pillar audit will involve environment and business ethics as well, thus offering buyers the total picture of social, environmental and integrity risk. However, both assessments use SMETA approach, while a 4-Pillar audit offers more depth.

Nevertheless, a 2-Pillar audit is far from shallow either, as it evaluates management systems, entitlement to work, subcontracting, homeworking and abbreviated environmental assessment.

Aspect	2-Pillar audit	4-Pillar audit
Pillars covered	Labour standards; health and safety	Labour standards; health and safety; environment; business ethics
Environmental assessment	Shortened	Full assessment
Business ethics	Not assessed	Assessed
Typical buyer use	Entry-level or lower-risk suppliers	Strategic, higher-risk or long-term suppliers
Preparation effort	Moderate	Higher, with more documents and policies
What the buyer learns	Workplace conditions	Workplace, environmental and integrity risks

 

Why Global Buyers Now Require a Sedex 4-Pillar Audit

Buyers aren’t adding paperwork for its own sake. Several pressures push them toward the wider audit.

• Due diligence pressure. In Europe and other regions, regulators require brands to assess human rights and environmental impact throughout their supply chains. Limited audit results in blind spots.
• ESG disclosure. The brands disclose information about their supply chains to the investors and consumers. ESG results become part of the reports.
• Environmental risk. Incorrect waste disposal, storage of effluents and chemicals can affect supply or cause penalties at a supplier’s facility.
• Exposure to corruption and fraud. Corruption, document falsification and covert subcontracting undermine a buyer’s brand even if it occurs several steps down the supply chain.
• One audit, many buyers. A comprehensive audit report published on Sedex saves buyers from carrying out numerous audits.
• SMETA 7.0. A new methodology that became mandatory since January 2025 included the Management System assessment as well as improved environmental and business ethics audits.

Sedex Buyer Requirements: What Retailers and Brands Typically Ask For

Requirements differ by buyer, so check your supplier manual first. Most follow a similar pattern:

• Profile of Sedex with the link to your website as per the buyer’s demand
• SMETA Audit conducted by the audit firm accredited by Sedex and not internal audit
• Type of audit as per the buyer’s demand, 2-Pillar audit or 4-Pillar audit
• Corrective Action Plan Report (CAPR) with all findings closed as per the agreed timeline
• Repeat audits as per the frequency of audits as per the buyer’s demand

Sedex 4-Pillar Requirements: What Auditors Check

Labour Standards

Audits will be carried out with regard to pay, hours of work, age verification, contracts, freedom of association, and grievances according to ETI Base Code.

Health and Safety

The health and safety audit will involve inspections concerning fire exits, machine guards, personal protective equipment (PPE), first aid facilities, chemicals, and living quarters (dormitories) if you have housing for your employees.

Environment

Environmental audit will include inspections for permits, waste and effluent management, emissions, water use, energy use, and hazardous substances management.

Business Ethics

Audits will cover anti-corruption measures, document integrity, sub-contractor issues, and handling of reports.

It is important to note that SMETA 7.0 has also added the Management Systems Audit which will be an audit for the implementation of policies. Therefore, it will not help just to have the policy in writing.

Sedex 4-Pillar Audit Requirements for Suppliers: Document Checklist

Most Indian suppliers should have these ready before the auditor arrives:

• Factory licensing
• PF and ESI registration, and licensing for contract labour, wherever applicable
• Attendance and payroll records
• Records of age verification and employment agreement
• Fire safety records and training records of fire drills and fire safety
• Consent to Operate license issued by the State Pollution Control Board and disposal records of waste
• Safety and worker’s rights training records
• Anti-corruption policy, code of conduct, and grievance policy and evidence of communication of such policies
• List of subcontractors and labor agencies

2-Pillar or 4-Pillar? A Simple Decision Framework

Ask your buyer first. If they haven’t specified, these pointers help.

Use a 4-pillars audit where:

• Your buyer mandates you to have one through their supplier manual 
• You process any chemical, dyeing, plating or other activities that generate effluent
• You need a single audit report to meet more than one buyer’s requirements
• You wish to be a strategic and lasting supplier

You will use a 2-pillars audit where:

• Your buyer has accepted your audit
• You have minimal environmental impact
• It is your first audit

Example: How the Decision Plays Out

Imagine an audited dyeing and printing unit under 2-Pillar certification last year. This year, there is a request by a new European buyer for 4-Pillar certification. The unit is doing well on labor and safety documentation, but poor on effluent treatment log and lack of anti-bribery policy.

These two areas will definitely be mentioned as observations. It makes sense to sort out these problems before the audit, not afterwards, as to keep the CAPR brief and relations good.

Pros and Cons of a 4-Pillar Audit

Benefits

• Greater buyer confidence because of comprehensive risk assessment
• Single report used by multiple buyers
• Early identification of environmental and compliance risks

Drawbacks

• More paperwork and increased time to prepare
• Increased scope may reveal weaknesses that have not been identified before
• More auditing and consulting work than a 2-pillar audit

Supplier Mistakes in Audits

• Approaching it as paperwork rather than an entire operation audit
• Getting environmental permits only during the audit week
• No written policy on business ethics or anti-bribery policies
• Inconsistency between payroll and attendance
• Preparation of answers for workers’ interviews
• Failure to close out CAPR issues

How to Prepare for a Sedex 4-Pillar Audit

1. Verify the type of audit. Inquire in writing from your buyer whether you require either a 2-Pillar or 4-Pillar audit.
2. Perform a gap assessment. Evaluate your facility in comparison to ETI Base Code, environmental and business ethics requirements.
3. Close the gaps. Start with safety risks, wage/hour violations and missing permits.
4. Create your documentation folder. Gather all licenses, records, policies and training verification into one folder.
5. Train your staff. Supervisors, managers and security personnel need to know what an auditor is looking for and why.
6. Conduct a dry-run audit. A mock-audit helps you identify areas of improvement while there is still time to improve them.
7. Close the CAPR and proceed. Think of CAPR as a starting point rather than an end in itself. Read our article on SMETA 7.0 continuous compliance.

What Happens on Audit Day?

The order can vary by auditor, but a SMETA audit usually follows this flow:

1. Initial meeting for confirmation of the audit’s scope, schedule and contacts at the site
2. Documentation review including payroll records, licenses, permits and policies
3. On-site walk through of production facilities, storage, canteens and dormitories
4. Confidential interviews of employees away from management
5. Conclusion of audit where the auditor presents their results

The audit company then uploads the report and CAPR to Sedex, and your buyers can view them once you share access.

Do You Need a Sedex Consultant in India?

A Sedex Consultant in India will conduct the gap analysis, bridge the documentation gap and prepare your team before the audit commences. This is most beneficial when you are making a transition from 2-Pillars to 4-Pillars for the very first time.

Legal4sure collaborates with suppliers in conducting gap analysis, mock audits and CAPR closure. If you have a team that efficiently manages environmental and ethical compliance, you may conduct preparation yourself.

Key Takeaways

• The Sedex 4-Pillar audit involves labor, health & safety, environment, and business ethics, whereas a 2-Pillar audit entails only the former two pillars.
• The buyers need it due to the requirements of due diligence, ESG reporting, and enhanced risk visibility.
• SMETA 7.0 set new standards by incorporating the assessment of the management systems along with enhanced checks on environmental and ethical considerations.
• Payroll, licenses, environmental permissions, and ethics policies are the key documents that would determine the results of the audit.
• Make sure that you confirm the type of audit and conduct a gap analysis prior to the audit date.

Conclusion

The Sedex 4-Pillar audit has set the standard for buyers who want a single report on workers, safety, environment and integrity. The move from 2-Pillar is here to stay, and suppliers who get ready ahead of time will have less to fix and less repeat auditing.

First, find out from your buyer what audit they require, and then fill those gaps before the auditor does. Legal4sure can help you organize that process, step by step.