The 4th S refers to STANDARDIZING. It stresses the importance of consistent and standardized work practices. The 4th S says that all work stations for a particular job should be identical. All employees doing the same job should be able to work in any station with the same tools that are in the same location in every station. Everyone should know exactly what his or her responsibilities are for adhering to the first 3 S’s. This designer poster acts as a powerful visual display products that explains how the 4th S should be implemented and how it helps at the workplace. The poster acts as a training aid and is recommended for use along with other posters in this series.The poster acts as a training aid and is recommended for use along with other posters in this series.