Inventory management for Shopify workwear brands

The inventory problems workwear brands run into

• Size and fit sprawl. a single flannel shirt or Carhartt-style jacket can have 6 sizes times 4 colors times regular/tall/big, so one style becomes 40+ variants to track and reorder separately.
• Uneven size curves. most buyers land in a handful of middle sizes, but if you run out of those first you lose sales while XS and 3XL still sit on the shelf.
• Safety and compliance SKUs. hi-vis vests, steel-toe boots, and flame-resistant gear often need to be in stock constantly because customers (and their employers) can't substitute a different product.
• Durable goods with long replacement cycles. boots and jackets don't reorder as fast as consumables, so sales history can look thin per variant, making forecasting harder than for fast fashion.
• Overseas and domestic supplier mix. some basics come from overseas factories with long lead times and case-pack minimums, while branded or safety-certified items may only come from a few approved domestic suppliers with their own MOQs.

Seasonality and demand

Workwear has real seasonal pull even though it's not fashion-driven. Insulated jackets, coveralls, and thermal layers spike in fall as crews gear up for winter, while lighter work shirts and hi-vis gear with cooling features pick up in spring. Back-to-school and new-hire cycles at industrial employers can also create mini-surges tied to local hiring seasons. Because lead times from overseas factories are often long, you need to place cold-weather orders in summer and warm-weather orders in late winter, well before the actual demand shows up in your sales data.

Suppliers, lead times and minimums

Workwear suppliers split into a few types. Overseas factories (often in Asia) typically produce basics like t-shirts, work pants, and bulk hi-vis gear, usually with case-pack minimums per size and color and lead times that run several weeks to a few months. Domestic or branded suppliers (Carhartt, Red Wing, Wolverine, and similar) often have faster replenishment but strict minimum order quantities and sometimes limit how often small retailers can reorder. Safety-certified items like FR clothing or steel-toe boots may come from a narrower set of approved vendors, so lead times and MOQs there are less negotiable. Always confirm case-pack sizes per size run, since many workwear suppliers won't break a case for an odd size.

Worked example

Say you sell a mid-weight insulated work jacket in size Large, Black. You average 2 units a day, your supplier's lead time is 21 days, and you keep 5 safety days. Your reorder point is 2 x (21 + 5) = 52 units, so when on-hand stock drops to 52 you need to order. If you want 30 days of cover on top of the lead time, order quantity = 2 x (21 + 30) minus (on hand 52 + on order 0) = 102 minus 52 = 50 units. If the supplier's case pack is 12, you'd round up to 60 units to avoid breaking a case.

Try it with your own numbers in the reorder point calculator, or size your buffer with the safety stock calculator.

A simple system to start this week

1. List every size and color variant separately and check which ones actually sell versus which just take up warehouse space.
2. Set safety days higher for safety-compliance items (hi-vis, FR gear, steel-toe boots) since you can't afford stockouts on those.
3. Confirm case-pack and MOQ requirements with each supplier before you plan order quantities.
4. Place seasonal orders for insulated or hot-weather gear well ahead of the season, based on your supplier's real lead time.
5. Review slow sizes (XS, 3XL, Tall) quarterly and consider discounting or dropping sizes that consistently sit unsold.
6. Track which suppliers are overseas versus domestic so you can apply different lead times when calculating reorder points.

How SteadyShelf fits workwear brands

SteadyShelf fits workwear well because it forecasts each size and color variant separately and accounts for seasonal swings like winter jacket demand, then tells you when to order from each supplier based on their lead time and rounds to their case pack or minimum. It does not track lot numbers, expiry dates, or flame-resistance certification batches, so if you need to trace FR gear by production lot for compliance, you'll need to manage that outside the app. It also won't handle multi-location transfers if you stock separate warehouses for different regions.

$29/month flat, unlimited products and suppliers, 30-day free trial.

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