Tier 1, Tier 2 and Tier 3
A textile-industry convention for categorising the levels of the supply chain by type of transformation: Tier 1 garment-making, Tier 2 fabric mills, Tier 3 spinning, Tier 4 raw material.
Context
Tiers 1-2-3-4 are the textile-industry convention for categorising the levels of the supply chain by type of transformation. Tier 1 cut & sew (garment-making), Tier 2 fabric mills, Tier 3 spinning/ginning, Tier 4 raw materials.
Regulatory origin
A sector convention codified in the OECD Due Diligence Garment & Footwear 2018, the Cascale Higg FEM, the Better Cotton Initiative and other textile sector frameworks.
The 4 layers of the textile chain
Cut & sew · assembly of the final product (garment-making, accessories).
Fabric mills · fabric production (knit, weave, dye, finish).
Spinning/ginning · spinning (spinning fibre into yarn) or ginning (raw cotton into fibre).
Raw materials · cultivation or production of fibre (cotton fields, sheep, polyester manufacturing).
Timeline
UN Guiding Principles
Codify due diligence on the chain of activities.
OECD Garment Guidance
Officially codifies textile Tiers 1-4.
Convention in force
Adopted by Cascale Higg, the BCI, trade unions and sector NGOs.
Applied case
A textile brand maps its chain by Tier to prioritise due diligence according to the severity of impact.
Tier 1 garment-making: 4 factories (Morocco x2, Portugal x1, Spain x1) · BSCI A-rated · annual on-site audit.
Tier 2 spinning/dyeing: 6 plants (Turkey, Portugal) · OEKO-TEX STANDARD 100 · biannual wastewater audit.
Tier 3 ginning: Better Cotton Initiative cooperatives (Pakistan, India) · BCI Volume Tracker monitoring.
Tier 4 cultivation: 8 cotton cooperatives with origin dossier + sub-plot geolocation.
Common mistakes
Tier 1 does not always mean the geographically closest supplier.
Tier refers to the position in the chain (functional distance from the brand), not geographical distance. A garment-maker in Bangladesh is Tier 1 just as much as one in Portugal.
Tier 2 is not always the spinning tier.
Some conventions place dyeing and finishing in Tier 2 and reserve Tier 3 for spinning. Others do the opposite. Make the convention explicit.
Tier does not imply a direct contractual relationship.
Tier indicates the position in the chain. The brand's contractual relationship is usually only with Tier 1. Visibility over Tier 2/3 is built via a cascaded contractual clause.
Tier 1 is not the most relevant for impact.
Tier 3 (cultivation / extraction) usually concentrates the largest share of environmental and social footprint (cotton cultivation, human rights in the fibre). The operational focus must not stop at Tier 1.
Frequently asked questions
What are Tiers 1-2-3-4 in the textile chain?
A textile-industry convention for categorising the levels of the supply chain: Tier 1 cut & sew (garment-making), Tier 2 fabric mills (weaving + dyeing + finishing), Tier 3 spinning + ginning, Tier 4 raw materials (cotton cultivation, sheep rearing, synthetic-fibre production). The final product travels Tier 4 → Tier 1.
Why does the Tier 1-2-3-4 nomenclature matter?
Because it allows risks to be mapped and proportionate due diligence to be applied. Each Tier has a distinct risk profile: Tier 1 direct access (easily auditable); Tier 2-3 intermediate access (auditable with effort); Tier 4 minimal access (remote areas, agriculture). The CSDDD recognises this gradation — due diligence is proportionate to influence.
How is the Tier of a textile supplier identified?
By the type of transformation it performs: Tier 1 = assembly of the final product (cut, sew, accessories). Tier 2 = fabric production (knit, weave, dye, finish). Tier 3 = spinning (spinning fibre into yarn) or ginning (raw cotton into fibre). Tier 4 = cultivation or production of fibre (cotton fields, sheep, polyester manufacturing).
Which tier is most critical from a sustainability standpoint?
Tier 4 (raw material) and Tier 2 (dyeing & finishing) concentrate >80 per cent of the environmental impacts (water use, chemical emissions, pesticides). Tier 1 concentrates >60 per cent of the social impacts (working conditions in cut & sew, especially Asia and North Africa). The most robust strategy covers BOTH ends.
What is the difference between Tier 1-4 and the OECD Tier model?
Textile Tier 1-4 is sector nomenclature (the physical transformation of the product). The OECD Tier model (Due Diligence Garment & Footwear 2018) uses categorisation by proximity and influence (Tier 1 direct, Tier 2 indirect controlled, Tier 3 indirect uncontrolled, etc.). They coexist — textile Tier 1-4 measures STAGE, the OECD measures RELATIONSHIP.
Fuentes oficiales
- Cascale (formerly SAC)2024Voluntary framework
- OECD2018International guidance
- Textile Exchange2024Sectoral report
