5S is a workplace organization method that uses a list of five Japanes words:
These have been translated as
“Sort”, “Set In order”, “Shine”, “Standardize” and “Sustain”

The list describes how to organize a work space for efficiency and effectiveness by identifying and storing the items used, maintaining the area and items, and sustaining the new order.

The decision-making process usually comes from a dialogue about standardization, which builds understanding among employees of how they should do the work.