5S. Another name for Lean 5S Manufacturing, attributed to the Toyota Production System. It is a rigorous methodology for continuous improvement to reduce waste and optimize productivity through maintaining an orderly workplace and using visual cues to achieve more consistent operational results. By implementing 5S, the workforce becomes empowered to control their own environments and consequently promote awareness of the 5S concept and principle of improvement. It centers on five pillars: sierra (sort), seiton (set in order), seiso (shine), seiketsu (standardize) and shitsuke (sustain).