Operations

What you'll learn

Operations management determines how businesses transform resources into products and services customers want. This topic covers production methods, quality management, the supply chain, and managing stock effectively. You'll learn how businesses like Tesco, Toyota and Caribbean manufacturers make operational decisions that affect costs, quality and customer satisfaction.

Key terms and definitions

Job production — Creating one-off, unique products tailored to individual customer specifications, such as custom wedding cakes or bespoke furniture.

Batch production — Manufacturing groups of identical items that go through each production stage together before the next batch begins, such as bakery goods or clothing lines.

Flow production — Continuous mass production where items move through automated assembly lines without stopping, typical in car manufacturing or bottling plants.

Quality control — Inspecting finished products or samples at the end of production to identify and remove defects before reaching customers.

Quality assurance — Building quality into every production stage through systems, training and procedures to prevent defects occurring in the first place.

Procurement — The process of sourcing, selecting and purchasing materials, components and services from suppliers.

Supply chain — The complete network of suppliers, manufacturers, distributors and retailers involved in creating and delivering a product to the final customer.

Buffer stock — The minimum inventory level maintained to prevent running out during unexpected demand increases or supply delays.

Core concepts

Production methods

Businesses choose production methods based on product complexity, order size, customer requirements and available technology.

Job production suits specialist businesses creating unique, customised products:

• High labour skills required with craftspeople controlling the entire process
• Charges premium prices due to uniqueness and personalisation
• Motivated workers see projects through from start to finish
• High unit costs due to no economies of scale
• Slow production times unsuitable for mass markets
• Examples: Savile Row tailored suits, architectural services, custom Caribbean carnival costumes

Batch production balances flexibility with efficiency:

• Equipment can switch between different product batches
• Lower unit costs than job production through some economies of scale
• Allows product variety without complete customisation
• Workers may find repetitive batching demotivating
• Stock piles up between batches, increasing storage costs
• Examples: Grace Kennedy food products, pharmaceutical batches, textiles

Flow production achieves lowest unit costs for standardised products:

• Highly automated production lines with specialised machinery
• Maximum economies of scale reduce costs per unit dramatically
• Consistent standardised quality suits global brands
• Extremely high initial capital investment required
• Very inflexible — difficult to modify products or processes
• Equipment breakdown stops entire production line
• Examples: Coca-Cola bottling, Toyota cars, Samsung electronics

Technology in production:

• Computer-aided design (CAD) speeds up product design and modifications
• Computer-aided manufacture (CAM) controls machinery for precision and consistency
• Robotics handle repetitive, dangerous or precision tasks 24/7
• Automation reduces labour costs but requires substantial capital investment
• Increases productivity and reduces human error

Quality management

Quality affects customer satisfaction, brand reputation and profitability. Businesses use different approaches to maintain standards.

Quality control involves inspection and testing:

• Inspectors check samples or finished products against specifications
• Defective items identified and scrapped or reworked
• Cheaper initially as it doesn't require training all staff
• Wasteful — defects already made before detection
• Inspectors may miss defects or make errors
• Creates "us versus them" mentality between producers and inspectors
• Common in food safety testing, electronics inspection

Quality assurance prevents defects through systems:

• Every employee responsible for quality in their work area
• Regular training ensures staff understand quality standards
• Documented procedures and processes ensure consistency
• More expensive initially due to training costs
• Reduces waste by preventing defects rather than finding them
• Improves employee motivation and ownership
• ISO 9000 certification demonstrates commitment to quality assurance
• Examples: airline maintenance procedures, pharmaceutical manufacturing

Benefits of good quality:

• Enhanced brand reputation attracts and retains customers
• Justifies premium pricing due to reliability and performance
• Reduced waste and returns lower costs
• Improved employee morale and pride in work
• Competitive advantage in crowded markets

Consequences of poor quality:

• Product recalls damage reputation and incur huge costs
• Customer complaints and negative reviews spread quickly online
• Lost sales as customers switch to competitors
• Legal liability for dangerous or faulty products
• Demotivated workforce and high staff turnover

The supply chain and procurement

The supply chain connects all parties involved in getting products to customers. Effective management ensures materials arrive when needed at the right quality and price.

Supply chain stages:

1. Raw material suppliers (cotton farmers, steel producers)
2. Component manufacturers (fabric weavers, electronics makers)
3. Assembly/production (clothing factories, car plants)
4. Wholesalers/distribution centres
5. Retailers (shops, online platforms)
6. End customers

Procurement decisions:

• Price — balancing cost savings against quality requirements
• Quality — ensuring materials meet production standards
• Reliability — suppliers who deliver on time consistently
• Location — domestic suppliers offer speed; overseas may offer lower costs
• Ethical considerations — fair wages, environmental practices, child labour
• Payment terms — credit periods affect cash flow

Supplier relationships:

Single sourcing uses one supplier:

• Builds strong relationships and loyalty
• May negotiate bulk discounts
• Risky if supplier fails or raises prices
• No backup if problems occur

Multi-sourcing uses several suppliers:

• Competition keeps prices competitive
• Reduces dependency risk
• May miss out on bulk discounts
• More complex to manage multiple relationships

Logistics considerations:

• Caribbean businesses face higher shipping costs and longer lead times
• UK businesses can access European suppliers quickly
• Just-in-time delivery reduces storage but increases risk
• Global supply chains offer cost savings but increase complexity

Stock control and management

Stock (inventory) includes raw materials, work-in-progress and finished goods. Effective stock management balances having enough stock against minimising storage costs.

Stock control diagrams show stock levels over time:

• Maximum stock level — storage capacity limit
• Re-order level — stock level triggering new order
• Minimum stock/buffer stock — safety reserve preventing stockouts
• Lead time — time between ordering and delivery
• Re-order quantity — amount ordered each time

Costs of holding stock:

• Storage/warehouse rental and heating/lighting/security
• Stock deterioration, damage or theft (shrinkage)
• Opportunity cost — cash tied up in stock can't be used elsewhere
• Insurance costs
• Stock becoming obsolete or out of fashion

Consequences of poor stock management:

Overstocking:

• High storage costs reduce profitability
• Cash flow problems from money tied up in unsold stock
• Risk of waste from perishable goods expiring
• Stock may become obsolete or unfashionable

Understocking:

• Lost sales when customers find empty shelves
• Damage to reputation and customer loyalty
• Production delays if raw materials run out
• Rush orders from suppliers at premium prices

Just-in-time (JIT) stock management:

• Stock arrives exactly when needed for production
• Minimises storage costs and waste
• Requires excellent supplier relationships and reliability
• Very risky — any supply disruption stops production
• Originated with Toyota; now used by many manufacturers
• Unsuitable for unpredictable demand or unreliable suppliers

Bar codes and stock control technology:

• Electronic point-of-sale (EPOS) systems automatically update stock records
• Real-time stock tracking across multiple locations
• Automated re-ordering when stock reaches re-order level
• Reduces human error and labour costs
• Provides data for demand forecasting

Worked examples

Example 1: Production method recommendation (6 marks)

Question: Analyse which production method would be most suitable for a small Caribbean business making custom steel pan drums for professional musicians. Justify your recommendation.

Mark scheme answer:

Job production would be most suitable for this business (1 mark). Each steel pan drum is made to the musician's specific requirements for size, notes and tuning (1 mark for application). This requires skilled craftspeople who can work metal and tune instruments precisely (1 mark for knowledge). The premium price charged for professional instruments makes the high labour costs of job production viable (1 mark for analysis). The business likely produces relatively few drums, so investing in equipment for batch or flow production would not be cost-effective (1 mark for analysis). Job production also allows the business to build a reputation for quality craftsmanship and customisation which justifies premium pricing (1 mark for justified recommendation).

Examiner note: Strong answers apply business knowledge to the specific context (Caribbean, steel pan drums, professional musicians) and provide clear reasoning linking method to business circumstances.

Example 2: Stock control diagram interpretation (4 marks)

Question: The diagram shows stock levels for a UK supermarket's milk supply. The maximum stock is 500 litres, buffer stock is 100 litres, and re-order level is 200 litres. Calculate the re-order quantity if milk is delivered 2 days after ordering and the supermarket sells 50 litres daily.

Mark scheme answer:

During the 2-day lead time, the supermarket will sell 100 litres (50 litres × 2 days) (1 mark for calculation). When stock reaches the re-order level of 200 litres and the supermarket orders, stock will fall to 100 litres by delivery (200 – 100 = 100 litres) (1 mark for working). To reach maximum stock of 500 litres, the re-order quantity must be 400 litres (500 – 100 = 400 litres) (1 mark for calculation). This ensures stock never falls below buffer level and the supermarket can meet daily demand (1 mark for application).

Example 3: Quality management comparison (8 marks)

Question: Compare quality control and quality assurance for a pharmaceutical manufacturer. Recommend which approach would be more appropriate.

Mark scheme answer:

Quality control involves inspecting finished medicines to check they meet safety standards (1 mark for knowledge). Inspectors would test samples for correct dosage and contamination (1 mark for application). However, if defective medicines pass inspection, they could harm patients (1 mark for analysis). This is wasteful as defective batches must be destroyed (1 mark for analysis).

Quality assurance builds quality into every production stage through staff training and documented procedures (1 mark for knowledge). All workers take responsibility for quality, following strict protocols for mixing, storing and packaging medicines (1 mark for application). This prevents defects rather than finding them afterwards, reducing waste (1 mark for analysis).

Quality assurance is more appropriate because pharmaceutical safety is critical and defects could be fatal (1 mark for justified recommendation). The higher training costs are worthwhile given the risks and regulatory requirements (1 mark for justified recommendation, maximum 8 marks total).

Common mistakes and how to avoid them

• Confusing production methods — Remember: job = one-off custom products; batch = groups of identical items; flow = continuous mass production. Use the scale and customisation as your guide.

• Mixing up quality control and quality assurance — Quality control detects defects after production; quality assurance prevents defects during production. QA is proactive, QC is reactive.

• Ignoring context in exam questions — Always apply your answer to the specific business described. A custom jeweller needs different operations than a crisp manufacturer. Generic answers lose application marks.

• Stock control diagram errors — When calculating re-order quantities, account for the lead time. Stock continues being used during the wait for delivery. Show your working clearly.

• Overlooking hidden costs — When evaluating decisions like automation or JIT, consider maintenance costs, training needs, and risks, not just immediate savings.

• One-sided analysis — Exam questions ask you to analyse or evaluate, so always consider advantages AND disadvantages. Balanced answers demonstrating critical thinking earn higher marks.

Exam technique for "Operations"

• Command words matter: Identify requires naming only (1 mark each). Explain needs a point plus development (2 marks). Analyse requires showing the effect/consequence using connectives like "because" or "this means" (3+ marks). Evaluate demands weighing up options with a justified recommendation (top level marks).

• Use the context provided: Every mark scheme rewards application to the business scenario. Reference the business name, product, market or location in your answer. Generic textbook answers limit you to knowledge marks only.

• Stock control calculations: Show your working step-by-step. Even if your final answer is wrong, you can earn method marks. Label what you're calculating clearly.

• Quality questions often worth high marks: These typically require extended writing. Structure your answer: define both approaches, explain how each works in context, analyse advantages/disadvantages of each, then recommend with clear justification.

Quick revision summary

Operations transform inputs into outputs efficiently. Choose job production for custom products, batch for variety, flow for mass markets. Quality control inspects finished products; quality assurance prevents defects throughout production. Effective supply chains balance cost, quality, reliability and ethics in procurement. Stock management uses re-order levels and buffer stock to prevent stockouts while minimising storage costs. JIT reduces waste but increases risk. Consider context when recommending operational approaches — a Caribbean manufacturer faces different challenges than a UK mass producer.