Climate & Environment

Tier 1 / Tier 2 / Tier N Suppliers

Meaning statusEstablishedSource recordDirect document linkedWhy these are different

Definition

Supplier tiers describe distance from the buyer: tier 1 suppliers contract directly with the company; tier 2 supply the tier 1s (fabric mills to garment factories, component makers to assemblers); tier 3 and beyond reach back to processors and raw material producers (spinners, farms, mines). Sustainability risk rises steeply with tier depth: labour abuses cluster in tiers 2–4, and deforestation, water and emissions impacts concentrate at raw material origin — precisely where buyers have least visibility and leverage.

References

Source organisationSupporting reference

This reference provides supporting context for how “Tier 1 / Tier 2 / Tier N Suppliers” is defined and used.

www.oecd.orgBulk import source

Source imported for editorial provenance.

Overview

How it is used

The concept structures supply chain mapping, risk prioritisation, due diligence scoping and disclosure of multi-tier supplier data.

Why it matters

A company's supply chain is only as sustainable as its deepest tier; tier thinking is the map of where the bodies are buried.