The Language of Job Costing: Terms, Trade Documents & Credential Connections

Why Every Sewn-Products Professional Needs a Cost Vocabulary

Whether you are fitting a bespoke suit, re-upholstering a sofa, or fabricating a custom boat cover, every job you sell has a price and every price must cover your costs and leave a profit. The Custom Tailors & Designers Association (CTDA) credential and the Marine Fabricators Association (MFA) Master Fabric Craftsman (MFC) credential both test your ability to understand and apply job-costing language. Employers use these same terms every day. Mastering the vocabulary now means you will move faster and make fewer costly mistakes when you enter the trade.

The Three Cost Buckets

Job costing in sewn products starts with three fundamental buckets.

Direct materials are all goods that become part of the finished product: fashion fabric, lining, interfacing, thread, zippers, marine canvas, foam, webbing, snaps, and fasteners. You measure and price direct materials line by line.

Direct labor (also called cut-and-sew labor) is the time your shop's production workers spend cutting, sewing, and finishing a specific job. You track it per job, usually in hours multiplied by a labor rate.

Overhead covers every shop expense that is not direct material or direct labor — rent, utilities, equipment leases, insurance, administrative salaries, and supplies. Because overhead cannot be assigned to one job directly, it is spread across jobs through a process called overhead absorption.

Key Pricing Concepts: Markup vs. Margin

Two terms that look similar cause more underpricing errors than any others in this trade: markup and gross margin. Confusing them is a serious business risk.

• Cost is what you spend to produce or acquire the item.
• Markup is the dollar amount added to cost to arrive at a selling price, often expressed as a percentage of cost.
• Gross margin (also called gross profit margin) is the difference between selling price and cost, expressed as a percentage of selling price.

Example: You buy a yard of marine canvas for $10 and sell it for $15. Your markup is $5 ÷ $10 = 50% markup. Your gross margin is $5 ÷ $15 = 33.3% margin. The dollar profit is the same $5, but the percentages are very different. A shop owner who thinks they are earning a 50% margin but is actually applying a 50% markup is earning only 33 cents on the dollar — not 50 cents. Over many jobs, that gap can mean the difference between profit and loss.

Documents Where These Terms Live

Shop documents translate cost vocabulary into daily practice. Three documents are especially important.

Tailoring work order: Lists the customer's measurements, selected fabrics, required labor operations (canvas basting, pad stitching, pressing), and an itemized price. Terms you will spot: direct materials, cut-and-sew labor, alteration charge, and selling price.

Upholstery estimate form: Breaks out fabric yardage required, fill materials (foam, batting, dacron wrap), labor hours by operation (spring tying, cutting, sewing, installation), and a subtotal before tax. Terms you will spot: yardage yield, material cost, labor rate, and total job cost.

MFA marine canvas bid sheet: Designed specifically for marine fabrication shops, this document captures measurements of the boat, pattern layout, fabric quantity (often in both square feet and linear yards), hardware items, and installation labor. Terms you will spot: substrate, cut length, yield loss, bid price, and contingency allowance.

Yardage Yield and Yield Loss

Yardage yield is the usable fabric you get from a given quantity of material. No layout is perfectly efficient; off-cuts, pattern matching, and fabric defects all cause yield loss. A higher yield loss means higher material cost per finished unit. Experienced fabricators account for yield loss when quoting; beginners often forget it and underbid.

Overhead Absorption

Shops typically calculate an overhead absorption rate — total estimated overhead divided by total estimated direct labor hours (or sometimes direct labor dollars). Each job is then charged its share of overhead based on how many labor hours it consumes. If overhead is underestimated or jobs are underpriced, the shop runs a loss even when it appears busy.

Credential Connections

The CTDA exam content outline includes business and pricing competencies that directly reference terms such as cost of goods, markup, margin, and labor costing. The MFA MFC candidate handbook addresses fabrication estimating, material takeoffs, and bid documentation — all of which depend on the vocabulary in this lesson. As you complete the vocabulary card sort and document review activities that accompany this lesson, note which credential section each term belongs to. That habit of cross-referencing will serve you well in exam preparation and on the job.

Safety Note

This is a theory lesson focused on paperwork and pricing. Even so, when you handle actual shop documents or visit a production area for document review, follow your program's PPE requirements (closed-toe shoes, hair restraint near machinery) and never bypass lockout/tagout procedures on any equipment that is powered, even briefly. Safe shops are profitable shops — injuries stop production and drive up costs that appear in your overhead bucket.