A plant manager reports scrap and rework consume 8% of revenue while a competitor benchmark shows 2%. The exam question is not whether to cut scrap, but which framework names the gap (benchmarking), which method closes it (reengineering or kaizen), and which cost-of-quality bucket the savings hit.
A value chain is the set of activities a firm performs to design, produce, market, deliver, and support its product. Porter's framework splits these into primary activities (inbound logistics, operations, outbound logistics, marketing and sales, service) and support activities (firm infrastructure, HR management, technology development, procurement). Margin is what remains after the cost of all activities is subtracted from the price the customer pays.
- Identify the firm's discrete activities along the chain
- Assign costs and assets to each activity
- Identify cost drivers for each activity
- Compare the firm's chain against competitors' chains
- Reconfigure or improve activities to widen margin or strengthen differentiation
KEY: Value chain analysis exists to locate competitive advantage. A firm either delivers the same value at lower cost (cost leadership) or delivers superior value at acceptable cost (differentiation).
Common mistakes
- Calling inspection a value-added activity. Inspection is non-value-added; the customer pays for a defect-free product, not for the firm's confidence. Eliminate the defect cause; do not add more inspection.
- Treating kaizen and reengineering as substitutes. Kaizen is incremental and continuous; BPR is radical and discrete. Choosing kaizen for a broken process wastes years; choosing BPR for a working process wastes capital.
- Equalizing the four quality-cost buckets. Prevention dollars are not equivalent to appraisal dollars. Only prevention removes downstream failure cost.
Bottom line
- Value chain analysis maps primary activities (inbound logistics, operations, outbound logistics, marketing and sales, service) and support activities (firm infrastructure, HR, technology, procurement) to locate competitive advantage
- Value-added activities are those the customer pays for; non-value-added activities (inspection, rework, storage, moving, waiting) are waste
- The five steps are identify activities, assign costs, identify drivers, compare to competitors, and reconfigure (only the compare step needs external data)
- BPR is radical redesign; continuous improvement (kaizen) is incremental refinement toward ideal standards. BPR savings equal old cost minus new cost minus amortized implementation
Exam shortcut
When a question contrasts two improvement initiatives, classify as BPR if the language is "redesign," "transform," or "breakthrough" and as kaizen if the language is "incremental," "daily," or "continuous." The answer follows the verb. When a quality-cost question asks for the best dollar to spend, always choose prevention unless the question explicitly limits the choice.
The full lesson (about 1,758 words, 12 min read) adds 2 worked examples, all 6 common mistakes, a self-check, free in the app.
Learning objectives
- 1D5
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