PDCA for Jewellery Retail: How to Improve One Thing in a Week

Most showroom owners already try new things: a new greeting, a new billing flow, a new display. The problem is that these changes are rarely written down, rarely measured, and quietly fade after two weeks. PDCA is a way of making each change small, visible and honest.

This is the first article in our Lean for Jewellery Retail series. We start with PDCA because it is the engine behind every other Lean tool. If you only learn one habit from this series, make it this one: try a small change, check what happened, and decide.

What PDCA means, in a showroom

PDCA stands for Plan, Do, Check, Act. It is often called the Deming cycle, after the quality thinker W. Edwards Deming, and it is one of the best-known tools in Lean. In showroom terms:

• Plan. Pick one problem. Write down what you see today and what you will change.
• Do. Try the change for a short, fixed period. Small scale: one counter, one shift.
• Check. Compare what happened with what you wrote in the plan.
• Act. If it worked, make it the standard way. If not, adjust it or drop it, and start the next cycle.

The key word is small. A cycle that needs a committee, a budget and a month of preparation is a project, not PDCA.

A worked example: the billing counter queue

The example below is illustrative. It is not from a named client, and every number is a placeholder for you to replace with your own.

Suppose a showroom owner notices that on Saturday evenings customers who have already chosen their piece stand in a line at the billing desk. Some leave the line to look at other counters. Here is how one week of PDCA could look.

Plan (Monday)

Write one sentence for the problem: ‘On Saturday evenings, customers who have decided wait too long to be billed.’ Then record a starting point. For the next two evenings, a staff member notes the time a customer reaches the desk and the time the bill is handed over, for the first ten customers. That is your baseline.

Now list what could be causing the wait. For example, a showroom might find that the billing person also packs the jewellery, that old-gold entries slow the line, or that the printer is often out of paper. Pick one cause to test, not all three. Say you pick ‘the billing person also does the packing’.

Write the experiment: ‘A second staff member will do only packing and gift-wrapping at the billing desk on Saturday, 5 pm to 9 pm. We expect the average wait to fall. We will measure it the same way as the baseline.’

Do (Tuesday to Saturday)

Brief the two people involved in five minutes. Keep everything else the same, so that you know what caused any change. On Saturday evening, run the experiment and time the same ten customers. Note anything unexpected, such as the packing person running out of boxes.

Check (Sunday)

Put the two sets of times side by side. Did the average wait fall? Was it the packing, or was it simply a quieter evening? Ask the two staff what they noticed. A good check has three parts: the numbers, what the team saw, and what surprised you.

Act (Monday)

Choose one of three paths:

• Adopt. It helped, so write it as the standard way for busy evenings and brief the whole team.
• Adjust. It helped a little, so change one thing (for example, start packing earlier) and run another cycle.
• Abandon. It did not help, so go back to the old way. You have still learned that packing was not the bottleneck, and you can test the next cause.

The PDCA page

One sheet of paper is enough. Divide it into four boxes and write, in plain sentences:

• The problem, and the starting measure (with the date it was taken).
• The change you will try, who runs it, and for how long.
• What you expect to happen, written before you start.
• What actually happened, and the decision: adopt, adjust or abandon.

Writing the expected result in advance matters. Without it, it is easy to look at any result afterwards and say it went well.

Where else PDCA fits in a jewellery business

The billing queue is just one place to start. Other small, testable ideas include:

• Showing the first tray within a minute of a customer sitting down.
• Keeping the most-asked-for bangle sizes at the front of the counter.
• Placing a printed ‘how to read your bill’ card at the billing desk.
• Calling repair customers when the item is ready, rather than waiting for them to ask.
• Opening the vault register at a fixed time each morning, so that nobody waits for the key.

Pick things that are inside your control and that you can measure with a clock or a tally sheet.

Common mistakes

• Changing too many things at once. You will not know which one worked.
• Skipping the baseline. Without a starting number, ‘it feels faster’ is the only evidence you will have.
• No owner. Name one person who runs the cycle and writes the result.
• Stopping at Check. A result that is never turned into a standard way of working fades within weeks.

Frequently Asked Questions

Next step

If you would like help applying Lean in your showroom, workshop or back office, book a consultation with APJ Advisory. We will look at how your business runs today and talk through practical options. You may also like our guides to written SOPs for jewellery and retail stores and policies and SOP designing.