A customer has asked you to complete your Higg Index modules — usually the FEM, sometimes the FSLM as well. Before starting, confirm which modules and which version the customer needs, and whether they require verification.
| First question | Short answer |
|---|---|
| What are they? | Structured self-assessments of a facility's environmental (FEM) and social and labor (FSLM) performance, completed on the Worldly platform. |
| Who runs it? | Cascale (formerly the Sustainable Apparel Coalition). "SAC" and "Higg.org" in older emails refer to the same thing. |
| Do I do one per customer? | No. One assessment per year, shared with every buyer who asks. |
| Is the self-assessment enough? | Usually not. Most buyers require third-party verification of the score. |
| Which version? | Currently FEM 4.0, with a further update in November 2025. Confirm with the customer. |
Platform details and links checked 14 July 2026. Module names, versions, and cadence change; confirm the current requirements with your customer or on Cascale's site.
What the Higg Index is
The Higg Index is a suite of standardized sustainability assessment tools built for the apparel industry and now used across consumer goods. It is stewarded by Cascale and accessed through the Worldly platform, where facilities create an account, complete modules, and share results with customers. The full toolset is on Cascale's Higg Index tools overview.
Instead of every brand sending its own environmental and social questionnaire, suppliers complete one shared facility assessment that multiple customers access. Once a year; every buyer sees the same result.
Who it is for. Textiles, apparel, footwear, home furnishings, sporting and outdoor goods, bags and luggage. Manufacturers in these categories selling to larger brands or retailers can expect a Higg request.
Which version
The environmental module is on its fourth generation, Higg FEM 4.0, which raised data quality requirements and expanded what facilities report (Cascale's FEM 4.0 page). A FEM 2025 update released in November 2025 adjusted the assessment cadence and refreshed the emission factors, so scores and timelines may differ from earlier cycles.
The concepts here — what data you need, how verification works — are stable. The version, deadlines, and requirements are not; confirm them.
The two facility modules
Higg FEM: Facility Environmental Module
The module most buyers ask for first. Expect to report:
- Energy and emissions — fuel and electricity consumption by source, and the greenhouse gas figures they translate into (Scope 1 and 2)
- Water — intake by source; wastewater management and quality (weighted heavily for wet processing such as dyeing and finishing)
- Waste — quantities, streams, disposal and recycling routes, hazardous waste handling
- Chemicals management — inventory, safe storage and handling, restricted-substance controls; central in textiles and heavily weighted
- Air emissions — where relevant to your processes
- Environmental management systems — policies, targets, responsibilities, governance
The FEM is structured in levels: foundational questions on whether something is tracked at all, then progressively harder questions on targets, reductions, and leading practice. You do not need to be excellent everywhere to submit. You need to be accurate everywhere.
Higg FSLM: Facility Social & Labor Module
Social and labor conditions at the facility, aligned with established social-compliance frameworks:
- Wages and benefits — legal compliance and payment practice
- Working hours — limits, overtime, rest days
- Health and safety — building and machine safety, PPE, emergency preparedness
- Worker treatment — no child or forced labor, non-discrimination, freedom of association
- Recruitment — especially where migrant labor is involved
- Grievance mechanisms — a channel workers use
- Management systems — governance of the above
Not every customer requires the FSLM, particularly if you hold a recognized social audit. Ask which modules the buyer needs before committing the hours.
Self-assessment, then verification
- Self-assessment. Complete the module on Worldly against actual practice, uploading evidence.
- Verification. A self-assessed score carries limited weight. Most buyers require an approved third-party verifier to check answers and evidence, on site or remotely, and confirm or correct the score. A verified FEM is what customers compare.
Answer the self-assessment as though it will be verified. A large gap between self-assessed and verified scores damages the trust the exercise exists to build.
Evidence to gather first
Most of the difficulty in a first Higg cycle is searching for documents mid-assessment. Gather these before opening the module:
- Utility bills and meter data — electricity, fuel, water, gas, covering twelve months
- Waste records — transfer notes, quantities, disposal routes
- Chemical inventory and safety data sheets, plus restricted-substance list compliance records
- Payroll and working-hour records (FSLM)
- Health and safety documentation — risk assessments, training logs, incident records, building and fire safety certificates
- HR policies — wages, hours, non-discrimination, grievance procedure
- Environmental and social policies, and any targets
If you have the bills but no figures, the free carbon calculator and water calculator turn twelve months of meter data into the numbers the FEM asks for.
Higg in the wider picture
Consumer-goods customers also send EcoVadis invitations, direct audits, and restricted-substance programs. The same energy, water, waste, and labor data feeds all of them. The evidence assembled for the FEM is not single-use. The broader landscape for the sector is covered in ESG questionnaires for textile and apparel suppliers.
What not to do
- Do not over-claim in the self-assessment. Verification corrects inflated answers, and the gap undermines trust.
- Do not guess figures. If water or energy is not measured, start measuring. "Not tracked yet" is recoverable; a fabricated figure that fails verification is not.
- Do not neglect chemicals management. In textiles it is central and heavily weighted.
- Do not treat it as one-off. Facilities re-assess on a cycle and buyers watch for year-on-year improvement. A flat or falling score raises more questions than a modest starting one.
The bottom line
The Higg Index — Cascale's FEM and FSLM on the Worldly platform — gives consumer-goods buyers one shared, verified read on a facility's environmental and social performance. Confirm which modules and version the customer needs, gather energy, water, waste, chemical, and labor evidence first, answer the self-assessment as if it will be verified, and reuse the same data for every buyer that asks.