Explain the methods of production - job, batch and flow - and the factors a business considers when choosing between them

What this dot point is asking

This outcome wants you to explain the three main methods of production - job, batch and flow - their advantages and disadvantages, and the factors a business weighs when choosing between them. The central idea is that the best method depends on the type of product and the level of demand: a one-off custom item, a few dozen identical goods, and continuous mass output each suit a different method.

The answer

Job production

Job production makes a single item at a time, usually to a specific customer order. Each product can be unique or customised. Examples include a tailored suit, a wedding cake, or a bridge.

• Advantages: high quality, customised to the customer, motivating skilled work.
• Disadvantages: slow, high cost per unit, hard to use machines and bulk buying.

Batch production

Batch production makes a group (batch) of identical products together, then switches to another batch. Examples include a bakery making 100 loaves, then 100 rolls, or a clothing firm making one design then another.

• Advantages: some flexibility (different batches), lower unit cost than job, more variety than flow.
• Disadvantages: time and cost lost when changing between batches (setting up machines), work-in-progress builds up between stages.

Flow production

Flow production makes identical products continuously on a production line, often using machinery and automation. Examples include soft drinks, cars and electronics.

• Advantages: very low unit cost (economies of scale), high output, consistent quality.
• Disadvantages: very expensive to set up, little flexibility, a breakdown stops the whole line, and repetitive work can demotivate staff.

Factors when choosing a method

The right method depends on:

• The product - one-off and customised (job), varied standard goods (batch), or identical mass products (flow).
• The level of demand - low demand suits job, steady demand suits batch, high constant demand suits flow.
• The finance available - flow needs heavy investment in machinery.
• The need for flexibility - job and batch are flexible; flow is not.
• Labour and skills - job needs skilled workers; flow relies more on machines.

Examples in context

Example 1. A tailor versus a clothing factory. A bespoke tailor in Singapore uses job production: each suit is measured and made for one customer, giving high quality at a high price. A large clothing factory making thousands of identical T-shirts uses flow production on a line, achieving a very low cost per shirt. The contrast shows how the same industry uses different methods depending on whether the product is customised (job) or a standardised mass item (flow).

Example 2. A bakery mixing methods. A neighbourhood bakery uses batch production for its daily bread and buns - making 200 of one type, then switching to another - which keeps unit costs reasonable and offers variety. For special celebration cakes it switches to job production, making each cake to order. By combining methods, the bakery serves both steady everyday demand and one-off custom orders, illustrating that firms often use more than one method.

Try this

Q1. Define the term batch production. [2 marks]

• Cue. Batch production is making a group (batch) of identical products together, completing one batch before switching the equipment to produce a different batch.

Q2. State two advantages of flow production. [2 marks]

• Cue. Any two of: very low unit cost (economies of scale), high output, consistent and uniform quality, and the ability to automate and run continuously.

Q3. Explain one factor a business should consider when choosing between job and flow production. [4 marks]

• Cue. The level and nature of demand. If demand is high, steady and for an identical product, flow production gives the lowest unit cost and high output, so it is suitable. If demand is low or each customer wants something different, flow's heavy setup cost and lack of flexibility make it unsuitable, and job production - which makes customised items one at a time - fits better despite its higher unit cost.