5.2 Operations methods

Operations methods describe how inputs are transformed into outputs: job, batch, mass and flow production are common patterns. The method should fit volume, variety, customisation and required flexibility.

Job production is highly customised, batch groups similar items, mass makes high-volume standardised output, and flow runs continuously. As volume rises, unit cost may fall but flexibility can fall too.

Classify the method from volume, variety, continuity and customer specification, then state the trade-off.

A bespoke wedding cake uses job production; a bakery making 5,000 identical loaves uses batch or mass production; an oil refinery uses flow.

The labels are not determined by industry alone; one business can use different methods for different products.

Mass customization combines high-volume standardized processes with customer-selected variations, often using modular design, flexible technology and delayed final assembly. It can offer personalization with lower unit costs than job production, but requires investment, accurate information and coordinated processes. Evaluate all four methods against context: job production offers uniqueness and close quality control but is slow and costly; batch production balances variety and scale but creates changeover time and stock risk; mass/flow production gives speed, consistency and low unit cost at high volume but is inflexible and costly to stop; mass customization improves customer responsiveness but adds complexity. The best choice depends on expected demand, required quality, acceptable lead time, workforce and technology, not volume alone.