5S is a method for creating and sustaining an organised, standardised workplace in five steps: Sort (seiri), Set in order (seiton), Shine (seiso), Standardise (seiketsu) and Sustain (shitsuke).
5S is not about tidying but about stability: when everything has a fixed, marked place, deviations become visible immediately — the missing tool, the overflowing pallet space, the leak under the machine. 5S is the foundation visual management builds on.
Most 5S initiatives die at the fourth and fifth S. The first three can be carried out as a project; standardisation and discipline require management routines — audits, board follow-up and visible management interest.