# 5S

> Audit a physical or digital space against five Japanese rules of order.

Chapter III, Problem solving · 3.17 · Origin: Toyota Production System, codified by Hiroyuki Hirano (1995) · Time: 30 to 60 min · Solo or group

**Use it when** a workspace or process has become cluttered and slow.

Interactive workspace: https://kogu.tools/tools/five-s

## Abstract

5S comes from Japanese factories, where a clean, orderly workplace was treated as a condition for quality. Each S stands for a Japanese word: seiri (sort), seiton (set in order), seiso (shine), seiketsu (standardize) and shitsuke (sustain).

It works on any shared space where things pile up, whether that's a workbench or a shared drive. You score the space against each of the five, fix the weakest first, and audit again later to see whether the improvement held.

## Method

1. **Pick one area.** Choose a space small enough to finish, like one workbench or one shared folder, and note who uses it.
2. **Sort (seiri).** Take out everything that isn't needed for the work done here. If you're not sure, tag it and set a date to decide.
3. **Set in order (seiton).** Give everything that's left a clear place, with the things you use most closest to hand.
4. **Shine (seiso).** Clean the area and look closely while you do. Cleaning is when you spot wear and small faults early.
5. **Standardize (seiketsu).** Write down or photograph how the area should look, and say who keeps it that way.
6. **Sustain (shitsuke).** Audit on a schedule and fix whatever has slipped. Compare each audit with the last one.

## When to use it

- People waste time hunting for things in a shared space.
- A shared drive or codebase has grown cluttered and it's hard to find anything.
- You want a tidy starting point before improving a process with something like PDCA.

## Common pitfalls

- Treating it as a one-off clean-up. Without the last two steps, the mess is back within weeks.
- Deciding the layout without the people who use the space. They know which things they actually reach for.
- Aiming for a space that looks tidy instead of one where the work goes faster.
- Auditing everything at once. Finish one area before starting the next.

## References

- Hirano, H. (1995). 5 Pillars of the Visual Workplace: The Sourcebook for 5S Implementation. Productivity Press.
- Osada, T. (1991). The 5S's: Five Keys to a Total Quality Environment. Asian Productivity Organization.