How to Source Custom Workwear and Uniforms: Fabrics, Standards, and Sizing

Workwear is the least fashionable and most commercially reliable category in custom apparel. A brand can lose money on a seasonal t-shirt collection, but a workwear order is bought by a company that needs it to survive a warehouse floor. That changes the specification discipline completely: performance, certification, sizing against a roster, and repeatability across seasons all matter more than styling. This guide covers what to specify, what to certify, and where workwear orders actually go wrong.

What makes workwear different from every other category

The single most important shift: a workwear buyer is not comparing your price against other suppliers visually. They are comparing your quote against a spreadsheet, line by line, and your ability to deliver on a date against a service level agreement. Put the same information in the same order every time.

The fabrics that survive work

Cotton drill

• Twill weave, 2/1 or 3/1
• 240-320 gsm for shirts and trousers
• Breathable, comfortable, takes an industrial wash well
• The classic workwear fabric for coveralls, shirts, and trousers
• Shrinks 3-5% unless pre-shrunk

Cotton/poly blend

• 65/35 and 60/40 are the standard workwear blends
• Significantly stronger than 100% cotton, holds shape, minimal shrink
• The practical default for anything worn daily and washed hot
• 100% cotton is worth it only for a hotel or hospitality uniform where comfort and appearance dominate

Poly-cotton (poly-rich)

• 35/65 and 40/60 poly/cotton
• Best colourfastness, best abrasion resistance, cheapest of the three
• Feels less comfortable and traps more heat, but it outlasts cotton by years
• The right choice for warehouse, logistics, and high-abrasion roles

Polyester

• 100% poly twill, 150-245 gsm
• Best colourfastness and shrinkage resistance of any option
• The standard for chef wear, medical scrubs, and outdoor roles

Cotton canvas and duck

• Heavy plain or basket weave, 300-600 gsm
• Extremely durable, breaks in and softens with wear
• For work jackets, bags, aprons, and heavy-duty trousers

Aramid and flame-resistant blends

• Meta-aramid (Nomex), aramid/rayon ( blends), cotton/aramid
• Mandatory for welding, oil and gas, and electrical work
• Requires certification to the relevant standard for the specific hazard
• 2-5x the price of ordinary workwear fabric, and the certification is what justifies it

Hi-vis and high-visibility

• Polyester or poly/cotton in fluorescent yellow, orange, or red, with retroreflective tape
• Two categories: EN ISO 20471 (Europe) and ANSI/ISEA 107 (North America)
• See the standards section below, because the two are not interchangeable

Fabric comparison

Tenacity: the number nobody specifies

Every fabric has a tensile strength, measured in newtons. This is the single most objective measure of how long a garment lasts, and it is almost never written into a workwear tech pack.

• Tearing strength (ISO 13937, the tear test): 15-20 N is normal apparel, 25 N is good workwear, 35 N+ is heavy-duty
• Tensile strength (ISO 13934): 400 N minimum is a reasonable workwear floor
• Abrasion resistance (ISO 12947 Martindale, measured in cycles): 15,000 cycles is a minimum for workwear, 30,000+ for high-abrasion roles

Ask the factory for these three numbers. If they cannot supply them, they cannot tell you how the garment will perform, and neither can you promise the buyer.

Standards and certification

Workwear certification is not a marketing badge. In many roles, a garment that does not meet the standard cannot legally be used, and the buyer will reject the whole order.

Hi-vis and high-visibility

Hi-vis garments also need the correct colour (fluorescent yellow, orange, or red) and retroreflective tape with the right width and spacing. A garment in the wrong colour combination fails even with the right tape.

Flame resistance

• EN ISO 11612: protection against heat and flames, for oil and gas, welding, and industrial heat exposure
• EN ISO 11611: older standard for heat and flame, still referenced in some contracts
• NFPA 2112: US standard for flame-resistant clothing for protection of industrial personnel
• EN ISO 14116: limited flame spread, for clothing exposed to small flames

FR garments have a care constraint: they must not be washed with ordinary detergent, and they need the right FR thread and trims. A cotton FR garment sewn with non-FR thread loses part of its protection. Specify FR thread, and require the certification number on the label.

Other standards worth knowing

• EN 510: protective clothing against industrial chemicals
• ISO 20347 (Europe) / ASTM F2413 (US): safety footwear. Relevant if you are also sourcing boots
• EN ISO 20345: footwear comfort and hygiene requirements
• OEKO-TEX Standard 100: chemical safety on all components. Often required by corporate buyers as a supplier policy, even where no regulation demands it
• ISO 9001: the factory quality management system certification. Many corporate procurement departments require it as a supplier qualification

How to verify a certificate

1. Get the certificate number, not just a PDF
2. Verify the certificate is current and covers the specific product type and factory location
3. Confirm the certification body is accredited for that standard
4. Check whether the certificate covers the models you are ordering, or only the factory

The last point catches people out. A factory certificate may cover the site but not a new model. See our factory vetting guide for how to verify a supplier properly.

Sizing against a roster

This is the defining operational difference between workwear and consumer apparel. There is no size curve.

How a roster works

• The buyer sends a list: name, department, size, quantity, and often a specific garment variant
• You quote against that list, per size
• Some buyers specify by brand size (S/M/L), others by chest measurement in inches or cm
• Some specify by numerical trousers (waist in inches plus inseam)

Specification formats to support

The size map must be explicit

If the buyer sends “XL” you must know exactly what that means. Put a size chart in every quote and proforma invoice:

This table is the single highest-value thing you can put in a workwear quote. It lets the buyer’s procurement team verify your line items, and it prevents the classic dispute where the buyer thought XL meant something different.

Minimum quantities per size

• Some factories require a minimum of 20-50 pieces per size, because cutting below that makes the size run uneconomical
• State your per-size minimum in the quote so the buyer can build the roster around it
• If a roster has 3 people in a 3XL, that is a problem to solve in advance, not at production

Sample size set is mandatory

Do not approve a workwear garment from a single sample. Every size in the run must be sampled and measured against the size chart. Workwear grading errors are immediately visible in a workforce and generate a return of the entire order.

Decoration and branding

Logo placement standards

Workwear logos follow industry convention, and buyers will have an expectation. Specify:

• Left chest: the primary company logo, typically 8-10 cm wide, 7-9 cm down from the shoulder seam
• Right chest: department or division, often 7-8 cm wide
• Back yoke: large company or department name, 20-30 cm wide, positioned between the shoulder blades
• Sleeve: small logo, 4-6 cm, on the left sleeve above the elbow

Methods

The stitch density rule

This one detail separates workwear embroidery from decorative embroidery. Industrial laundering is aggressive: high heat, high agitation, chemical detergents. A logo embroidered at a light density will fray and disappear within months.

• Specify a minimum stitch density of 4.0 to 5.0 stitches per mm for workwear embroidery
• Specify a backing or stabilizer appropriate to the fabric
• For FR garments, use FR thread only

Employee names and numbers

• Name labels and numbers are typically applied at the point of issue, not embroidered
• Heat transfer or woven labels applied by the buyer or by a local provider
• Specify in the tech pack that name-tag positions are left blank, so the factory does not guess

Construction details that matter

Pockets

• Chest pockets: with a flap and button, or pen slot. Specify the flap size, the button type, and the reinforcement stitching at the corners
• Hand pockets: specify the bag depth and the bar tack at the corner
• Rule-of-work pocket: the large lower pocket on work trousers. Specify its dimensions and the load-bearing reinforcement
• Pen and tool slots: specify the number and spacing

Seams and stitching

• Triple-needle stitching on stress seams: two rows of lockstitch plus a coverstitch. This is the standard for workwear and it is what stops a seam failing under load
• Bar tack at every pocket corner, belt loop anchor, and stress point. Specify the tack count
• Seam allowance: 1.5 cm on workwear versus 1.0 cm on fashion. Specify it
• Chain stitch where flexibility matters, lockstitch where strength matters

Buttons and fasteners

• For garments that will be industrial-washed, use metal shank buttons or a reinforced poly-resin button
• Snaps on workwear must be the closed type with a metal ring, not the open split type used on fashion
• Specify that all trims be tested for the same restricted substances as the fabric

Trims

• Zippers: YKK or equivalent, with the specific type and size specified. Metal zipper teeth survive industrial laundering; plastic coil does not always
• Elastic: specify the content and the recovery. A waistband that sags after one wash is a fit failure across the whole order
• Velcro: industrial-grade only, and specify the hook count

Cost breakdown

Realistic FOB cost for a 600-piece workwear order of 65/35 cotton/poly twill shirts in 6 sizes, 2-colour chest embroidery, and a back yoke logo, split across 2 colours:

What moves the cost on workwear

• Emboldroidery density: the single biggest variable. A dense 5 stitches/mm logo can cost 2.5x a light one
• Number of logo locations: each location adds setup plus stitching time
• Fabric specification: 260 gsm twill versus 180 gsm poplin is roughly 0.80-1.20 USD per piece
• Special certifications: FR and hi-vis certification adds testing cost and often a certification fee per style
• Size run depth: 6-8 sizes with 20-50 pieces per size needs more cutting setups than 4 sizes

The total cost of ownership argument

This is how a workwear buyer actually thinks, and it is how you should present your quote:

The premium supplier is 47% more expensive per unit and about 63% cheaper per month of use. Present the quote that way and the conversation changes. This is also why workwear buyers stay with a supplier for years once the quality is proven.

MOQ and lead time for workwear

Stage-by-stage timing is in our lead times guide, and the MOQ logic is in our MOQ guide.

8 mistakes that cost workwear suppliers money

1. Not putting the size map in the quote — the procurement team cannot compare line items without it, and you will get a clarification email on every order. Make the map standard
2. Quoting a single price instead of per size — a roster order must be quoted per size. A single price invites a procurement dispute
3. Not specifying stitch density — a light-density logo will wear out in months and generate a quality complaint on the whole order
4. Ignoring the size distribution — a roster skewed heavily to XXL and 3XL needs different fabric consumption and may push you past your MOQ for the popular sizes. Model it
5. Not offering split shipments — a large rollout usually wants a first delivery for one site or division. If you cannot split, you lose the order
6. Quoting FOB when the buyer expects DDP — the incoterm has to be on the quote, or the comparison against another supplier is meaningless
7. Forgetting the re-order continuity — a workwear buyer expects the same garment next season. Keep the dye recipe and the pattern on file, and say so
8. Not offering a size set sample for every size — grading errors in workwear are immediately visible and expensive to fix after a 600-piece run

Quality checks specific to workwear

Add these to the inspection brief:

• Measure every size against the size chart, not just the middle size
• Seam strength: check that stress seams are triple-needle stitched and the stitching is dense, not sparse
• Bar tacks: present and tight at every pocket corner, belt loop, and stress point
• Buttons: secure, with shanks where specified, and spare buttons included in the pack
• Zipper: operates smoothly and does not snag; metal teeth on industrial garments
• Embroidery density and backing: dense, no puckering, no loose thread, backing not visible
• Colour: consistent across the batch and matching the approved lab dip
• Hi-vis or FR: verify the certification label and the tape width and placement if applicable
• Packing: packed by size and by division, with the size distribution visible on the carton marks

How to structure the inspection request is covered in our QC and AQL guide.

Packaging for workwear

• Fold by size and pack each size separately, with the size marked on the carton. A mixed carton is a sorting problem for the buyer’s warehouse
• Include a spare set of buttons and a spare logo in every carton
• Individual poly bags per garment, 0.05 mm
• Typical unit load: 40-60 shirts per master carton
• A 20ft container holds roughly 12,000-16,000 workwear shirts; a 40ft high cube holds 28,000-38,000

Carton and container math is in our packaging and container optimization guide.

FAQ

Do I need certifications for workwear?

Only for regulated applications. Hi-vis, flame-resistant, chemical-protective, and protective footwear all have mandatory standards. For general office, hospitality, or logistics uniforms, no specific certification is required, though many corporate buyers require OEKO-TEX and a certified quality management system as a supplier qualification. Always ask the buyer whether the end use is regulated, because that determines the whole approach.

How do I quote against a size roster?

Build the quote per size, per style, per colour, with the size map at the top so the buyer can verify it. Add the per-size minimum so they can adjust the roster if a size is below it. Confirm whether they want one consolidated delivery or staggered deliveries by division, and price the freight accordingly. See the contracts guide for how to document the order.

What is the difference between a work shirt and a dress shirt?

Construction and specification, not styling. A work shirt typically uses 240-320 gsm twill, has a chest pocket with a flap and reinforcement, triple-needle stitching on the side seams, bar tacks at the stress points, and a metal shank button. A dress shirt uses a fine 140-200 gsm woven, has no reinforcement, and uses a lighter poly-resin button. The work shirt is engineered to survive industrial laundering and physical work.

How much should custom workwear cost?

FOB from China for a 65/35 cotton/poly twill shirt with two embroidered logos: roughly 5.50-7.50 USD per piece. For a hi-vis or FR garment with certification, 12-30 USD. DDP into Europe or the US typically lands 20-35% above the FOB price. The meaningful comparison is cost per month of wear, not unit price. For the general cost model, see our pricing guide.

What is the minimum order for custom workwear?

300-500 pieces per style per colour with stock fabric, and the MOQ applies per colour rather than per size. Below 300, some factories will not accept a multi-size roster at all. The real constraint is usually the buyer’s volume, not yours, so ask for the forecast before you quote.

Can you match a competitor’s workwear exactly?

You can match the specification, but you should not copy the trademark or the protected design. In practice buyers ask to match a specific existing garment by measurement, and you can do that from a sample you are given. What you cannot do is reproduce the brand identity. If a buyer sends you a competitor sample to copy, confirm in writing what you are being asked to copy: measurements and construction are fine to match, artwork and branding are not.

How do I handle a rush workwear order?

Rush fees of 10-20% are standard, and the timeline only compresses if the factory has free capacity. The realistic compression for an established factory is 10-15 days, not 30. If the order is genuinely urgent, check whether the factory can split the delivery: ship the core sizes and colours on time and the balance a week later. That single move saves more orders than a rush fee.

How do I keep quality consistent on reorders?

Keep the pattern, the dye recipe, the trim specification, and the decoration files on file, and note that you have done so in the contract. Also keep an archive sample from each production run. When a reorder comes 12 months later, the archive sample is what lets you confirm the new run matches the old one, and it is far cheaper than a full re-development. See our contracts guide for the framework agreement that supports this.

How this fits the buyer journey

Everything in the general cluster applies. These are the ones that matter most for workwear:

• Contracts and IP Protection — framework agreements for repeat programmes
• How to Vet a Factory — certification and audit verification
• Custom Fabric Development — GSM, tenacity, abrasion, shrinkage
• Sizing and Grading — the size map and roster grading
• Decoration Methods — embroidery density for industrial laundering
• Trims and Labels — buttons, zippers, spare parts
• Color and Dye Development — matching body, trim, and thread colours
• Custom Apparel Pricing — and the cost per wear argument
• MOQ Guide — why the MOQ is per colour
• Lead Times — including certification lead time
• QC and AQL — the workwear-specific inspection checks
• Packaging — packing by size and division
• Activewear — performance fabrics for technical roles
• Kidswear — where safety certification overlaps

How we work at Kemondo

At Kemondo Apparel, we run workwear as a programme rather than as an order, because that is how the buyers use it. Every workwear quote we send includes the size map with UK, US, and EU conversions, the per-size minimums, the tenacity and abrasion figures for the specified fabric, the stitch density for the embroidery, and the certification scope for the intended use. We keep the pattern, the dye recipe, and the decoration files on file for every programme, and we archive a sample from each run, so a reorder 12 months later is a production run rather than a re-development. For hi-vis and FR we work with certified mills and testing partners and we specify FR thread throughout on FR garments. We quote per size and per colour, we support split shipments by division or site, and we pack by size with the distribution marked on the carton so the buyer’s warehouse can issue efficiently. And we will tell you plainly when a specification you have been given cannot be met, because a certification that does not cover your model is a liability that arrives with the container.

Planning a workwear programme and want a real quote? Message us on WhatsApp with the garment types, the size roster or forecast, the intended use, and the target market. We usually reply within 12 hours with a full cost breakdown, the certification scope, and an honest read on the MOQ and lead time.