Job production
Job production: making one item, or a very small number of items, to a customer's own specification before the next order is started.
- One-off orders: each product is made to what one customer has asked for, so no two jobs are identical and the work starts again from scratch each time.
- Labour-intensive: skilled staff do most of the work using general tools, rather than a machine line built for one design.
- A bespoke kitchen is measured, built and fitted by joiners for one house, so the same design is never repeated.
- High unit cost: skilled wages and the hours each item takes are carried by a single unit, so the cost of each unit is high and the selling price has to be high too.
- Very flexible: size, materials and design can change with every order, so the business can take on unusual work that a production line could not handle.
- Motivating work: staff use a range of skills and see a finished product they can take pride in, which helps a small firm keep experienced workers.
- JCB builds machines to order, fitting the attachments and cab a particular buyer needs for the site the machine will work on.
- A tailored suit is cut to one person's measurements, and a wedding cake is designed for one couple.
Flow production
Flow production: making large quantities of identical products that move continuously along a production line, with the same task added at each stage.
- Continuous and standardised: the product never stops moving, and every worker or machine repeats one task on every unit that passes, so each unit comes out the same.
- Capital-intensive: machinery and automation do most of the work, so fewer workers are needed, but the cost of setting up the line runs into millions of pounds.
- Low unit cost: the cost of the line is spread across a very large output and materials are bought in bulk, so each unit costs little to make.
- Needs high and steady demand: if sales fall, the line runs below capacity, the set-up cost is spread over fewer units and the cost of each unit rises sharply.
- Repetitive for staff: doing one short task all day is boring, which can lead to mistakes, absence and staff leaving.
- Expensive to change: retooling the line for a new design costs a great deal and stops output while it happens, and one breakdown halts every stage at once.
- Nissan's Sunderland plant builds hundreds of thousands of cars a year on a moving line, so each car costs far less to build than a hand-made one.
- Warburtons mixes, proves, bakes, slices and bags loaves in one continuous run, turning out identical loaves by the thousand.

When job production suits a business
- Job production suits a business whose customers each want something different, because the specification changes with every order.
- It suits low volumes, where demand is far too small to repay the cost of building a production line.
- It suits products customers will pay a premium price for, since the high unit cost has to be covered somehow.
- A made-to-measure suit sells for hundreds of pounds more than an off-the-peg one because the fit is cut for one body.
- It suits a business competing on skill, quality and reputation rather than on price, such as a bespoke furniture maker.
When flow production suits a business
- Flow production suits a business selling one standard product in very large numbers, where every customer is happy to receive the same thing.
- It suits demand that is high and predictable, because the line has to run near capacity for its set-up cost to be worth paying.
- It suits a business competing on price, because the low unit cost allows a low selling price and still leaves a profit on each unit.
- It needs a business with the finance to buy the machinery in the first place, which a new start-up rarely has.
Once a method is chosen, a business can raise output from the same resources using lean production and just in time, which the article on efficiency in production covers.
- For recommend whether the business should use job or flow production, actually decide, and base the decision on how large and how varied the demand is.
- The mistake to avoid is calling flow production cheaper without saying that this only holds at high output, because a half-empty line is expensive per unit.
- AQA names job and flow production only, so do not write about batch or cell production.
- What is job production?
- Why is the unit cost of job production high?
- Why does flow production need high and steady demand?
- Give one drawback of flow production for the workers on the line.
- Which method suits a maker of made-to-measure curtains, and why?