Continuous Improvement
Continuous Improvement is making small, steady changes to how work actually gets done, tested in short cycles, rather than waiting for a big redesign to fix things.
Watch the circle turn through four steps, plan, do, check, act, before starting again.
Reach for this when…
- The same defect or delay keeps recurring and everyone's used to working around it.
- A big change programme stalled and the problems it was meant to fix are still there.
- Frontline staff have ideas for fixing things and no route to actually try them.
How to run it
- Pick one specific problem, not 'quality' in general.
- Plan a small, testable change to the process that causes it.
- Do the change on a small scale.
- Check the result against what actually happened, not what you hoped.
- Act: keep it, adjust it, or drop it, then pick the next problem.
A worked example
Situation. Eliška Novotná managed a garment factory for Morava Textiles in Brno, Czechia, where a stubborn seam defect was running at 6% of one product line and had been 'normal' for two years.
Applied. She ran a PDCA cycle with the line's own machinists: they proposed a change to how fabric was tensioned before stitching, tested it on one machine for a week, and checked the defect rate against the untouched machines next to it.
Result. The defect rate on that machine dropped to under 2%. She rolled the change across the line the following month and moved the team on to the next recurring problem.
The catch
Continuous improvement fixes the process you're looking at; it won't tell you if you're improving the wrong process entirely. And momentum dies fast if the small wins never get rolled out beyond the pilot, or if management treats every cycle as a one-off project instead of a habit.
If the same defect is still 'normal' two years from now, you're not improving continuously, you're tolerating consistently.
Origin: Walter A. Shewhart's 1939 scientific-method cycle (specification, production, inspection) is the root; W. Edwards Deming adapted and taught it in Japan in the 1950s, where it took the four-step Plan-Do-Check-Act form now in common use (Deming later preferred Plan-Do-Study-Act, swapping 'Check' for 'Study', and pushed back on PDCA as a corruption of his teaching); it became embedded in the Toyota Production System.