This page explains the four most common causes of a shipment delay and where each one starts, for anyone who tracks an order's own timeline at work: a merchandiser, a line supervisor, or a new entrant to the trade. This lesson mainly teaches information: which milestone a delay's own root cause sits at, before anyone decides what to do about it. Mona, the merchandiser at Delta Garments, checks her orders against this list every week, on Cedar & Co.'s domestic run as much as on any export order.
A person who only watches the ship date can still be caught by surprise, because a delay rarely announces itself as "the ship date will slip." It shows up first as a late fabric delivery, a rejected sample, a line with more work booked than it can sew, or a fault found at inspection, weeks before the ship date is threatened. Without a short, fixed list of where delays start, a merchandiser risks treating every slip as unfamiliar, instead of naming it and moving to a recovery option.
You need: T11-C01's critical path lessons are useful background, since this lesson names delays against the same milestones, but they are not required.
By the end of this lesson you can:
Not covered here: how to choose a recovery option once a cause is confirmed (lesson 6.2); how a buyer's claim for a missed date is calculated (lesson 6.3); chargebacks as a separate, unilateral deduction (lesson 6.4).
| Term | Meaning |
|---|---|
| Shipment delay | Any slip against the order's own timeline that puts the confirmed ship date at risk, whatever stage of production it starts at. |
| Fabric delay | A shipment delay that starts because fabric arrives at the factory later than the critical path's own fabric milestone, so sewing cannot start on time. |
| Sample rejection cycle | The repeated round of submitting a sample, the buyer rejecting it, and the factory resubmitting a corrected sample, each round using days the critical path had not planned for. |
| Overbooking | Booking more quantity onto a line or period than its actual daily capacity can produce, so the booked total exceeds what the line can deliver on time without added cost. |
| Rework | Fixing a fault in goods already made, instead of scrapping them or accepting them as they are. |
| Critical path | The chain of sequential stages that sets the shortest possible total time for the order. |
| Make to Stock (MTS) | Producing against the seller's own sales forecast, rather than a single confirmed buyer order. |
A shipment delay almost always starts at one of four points on an order's critical path: a fabric delay, a sample rejection cycle, overbooking on the sewing line, or quality rework found at inspection. Each cause sits at a different milestone, fabric delay at the fabric-in-house milestone, a sample rejection cycle at the approvals milestone, overbooking at the sewing milestone, and rework at the inspection milestone, so naming which one applies tells a merchandiser exactly where on the timeline the order has actually fallen behind. This four-cause list applies the same way whether the order is an export Make to Order run or a domestic Make to Stock run like Delta Garments' T-shirt production for Cedar & Co.; a domestic order's fabric can arrive late exactly as an export order's can.
| What can differ | The shapes you meet | Why it matters |
|---|---|---|
| Export, Make to Order | Northline Apparel's confirmed order for Order A's T-shirt can slip at its fabric milestone if Nile Spinning's yarn or Rowad Knits' greige fabric runs late against the critical path built for that one buyer's order. | The same four-cause list applies, but the ship date it threatens is fixed by a letter of credit and a buyer's own inspection booking. |
| Domestic, Make to Stock | Delta Garments' own T-shirt run for Cedar & Co. can slip at the same fabric milestone, since it uses the same fabric and construction, planned from Cedar & Co.'s forecast rather than one confirmed order. | The delay causes do not change with the planning model; a forecast-driven order needs the same four-cause check as a buyer-confirmed one. |
| Hybrid planning | A factory such as Delta Garments runs an export Make to Order line and a domestic Make to Stock line side by side, and overbooking on one line's sewing capacity can happen independently of the other. | Naming which line and which cause applies keeps a hybrid factory's two planning models from being confused with each other when a delay is reported. |
| Other product families | A knit-to-garment or hosiery order such as Suez Hosiery's sock runs meets the same four causes, though a dye-lot minimum can turn a small reorder into its own fabric delay if the mill will not run less than 300 kg. | The four-cause list is not limited to apparel cut-and-sew; the same milestones exist wherever a critical path exists. |
Mona, the merchandiser at Delta Garments, checks the production tracker for Cedar & Co.'s domestic T-shirt run, built on Order A's own construction and 16-week timeline. The tracker shows sewing has not started by week 7, though the critical path calls for fabric in-house and sewing to begin by week 7. Mona does not treat this as one unnamed problem; she checks the fabric-in-house milestone first, since a late sewing start almost always traces back to a late fabric arrival rather than a sewing-floor problem. Rowad Knits' greige fabric delivery to Colorline Dyeing ran four days late, pushing the dyed fabric's own arrival at Delta Garments to week 7.5 instead of week 7. Mona names the cause as a fabric delay, at the fabric-in-house milestone, before deciding anything about sewing capacity or the ship date itself.
The worked numberThis lesson's worked number is a count: how many of the critical path's own days a confirmed delay has already used, once its cause and milestone are named.
A common mistake is naming a delay by the milestone where it is discovered, a late sewing start, rather than the milestone where it actually started, a late fabric arrival. Discovering a problem at the sewing milestone does not mean the sewing milestone caused it; sewing simply cannot start until fabric is in-house, so a sewing delay is very often a fabric delay reported one milestone late.
This trap costs time twice. First, it sends the search for a fix to the wrong department, the sewing floor, when the fabric supply chain is the actual cause. Second, every day spent investigating the wrong milestone is a day not spent choosing a recovery option, on an order where the days already used, as the worked number shows, start counting from the first slipped milestone, not from when someone finally reports it.
An order can fall behind for one of a few common reasons, and almost every reason traces back to one of four starting points. The fabric can arrive late. A sample can be turned down and need another round before it is approved. A sewing line can have more work booked onto it than it can actually finish in the time available. Or a fault can be found once the goods are checked, meaning some pieces need fixing before they can ship. Finding out which of these four things happened, and exactly when, matters more than simply noticing that the order looks behind schedule. It does not matter whether the order is for a foreign buyer or for a local shop's own shelves; the same four starting points apply either way.
Mona, the merchandiser at Delta Garments, opens the production tracker for Cedar & Co.'s domestic T-shirt run in week 7 of its 16-week timeline. The facts in front of her:
The document Mona reads, the tracker's own milestone row for this order:
Should Mona open an investigation into the sewing floor's own scheduling, or name this as a fabric delay and move on? Decide before you open the answer.
She should name this as a fabric delay and move to a recovery decision, not investigate the sewing floor. The tracker's own milestone row already shows the fabric-in-house milestone itself is 3.5 days late, and sewing's status of "not yet started, pending fabric" confirms sewing is waiting on fabric, not failing on its own account.
Two facts, together, decide this. First, the fabric-in-house milestone, not the sewing milestone, is the one recorded as late. Second, the downstream sewing milestone's own status names the reason as "pending fabric," ruling out a sewing-floor cause such as overbooking.
Opening a sewing-floor investigation instead would use days better spent choosing a recovery option, since the sewing floor has done nothing wrong here; it is simply waiting for fabric that Rowad Knits delivered late to Colorline Dyeing.
This lesson's cost is the time already used once a delay's true cause is confirmed. On Cedar & Co.'s T-shirt run, the fabric delay uses 3.5 of the order's 112 planned days, about 3% of the total timeline, before Delta Garments even reaches the point of choosing a recovery option in lesson 6.2. That 3.5 days is not itself an extra cost in money; its cost is that it narrows how many recovery options remain open by the time a decision is needed, since some recovery options, such as overtime and re-balancing, need more days remaining than others, such as an air freight upgrade, to work.
The cost of misnaming the cause, as in the trap above, adds more days on top of the 3.5 already used, since an investigation into the wrong department produces no fix and simply delays the point at which the real recovery decision starts.
Copy this row into the delay recovery decision guide's Decide sheet, using the order and milestone you are checking, whichever order or buyer it belongs to.
| Check point | Spec says | Found (your entry) | Result |
|---|---|---|---|
| Delay cause and days used at the first slipped milestone | Compare the tracker's actual date against the critical path's planned date at each milestone and name the cause |
Download the full working sheet, with Cedar & Co.'s T-shirt run's fabric delay already filled in, from the link on this course's page.
1. What are the four most common causes of a shipment delay?
2. Sewing has not started on schedule for an order. What should a merchandiser check first before naming the cause?
3. Cedar & Co.'s T-shirt run shows fabric 3.5 days late against a 16-week (112-day) timeline. On an order with a 22-week (154-day) timeline and a 5-day fabric delay, what share of the timeline does that delay use?
| EN | AR | FR | TR | Meaning |
|---|---|---|---|---|
| Shipment delay | تأخير الشحنة | Retard d'expédition | Sevkiyat gecikmesi | Any slip against the order's own timeline that puts the confirmed ship date at risk, whatever stage of production it starts at. |
| Fabric delay | تأخير القماش | Retard du tissu | Kumaş gecikmesi | A shipment delay that starts because fabric arrives at the factory later than the critical path's own fabric milestone, so sewing cannot start on time. |
| Sample rejection cycle | دورة رفض العينة | Cycle de refus d'échantillon | Numune reddi döngüsü | The repeated round of submitting a sample, the buyer rejecting it, and the factory resubmitting a corrected sample, each round using days the critical path had not planned for. |
| Overbooking | الحجز الزائد | Surréservation | Aşırı rezervasyon | Booking more quantity onto a line or period than its actual daily capacity can produce, so the booked total exceeds what the line can deliver on time without added cost. |
| Rework | إعادة التشغيل (تصليح العيب) | Retouche | Yeniden işleme (tamir) | Fixing a fault in goods already made, instead of scrapping them or accepting them as they are. |
| Critical path | المسار الحرج | Chemin critique | Kritik yol | The chain of sequential stages that sets the shortest possible total time for the order. |
| Make to Stock (MTS) | إنتاج حسب المخزون | Fabrication sur stock | Stoğa üretim | Producing against the seller's own sales forecast, rather than a single confirmed buyer order. |
You now know the four most common causes of a shipment delay and where each one starts. The next lesson takes a confirmed delay on Order A's export run for Northline Apparel and chooses the right recovery option before the ship date arrives. Back to the course map