Standardized Work with TWI: Eliminating Human Errors in Production and Service Processes presents the Training within Industry (TWI) program and describes how it can influence and alter one's understanding of work standardization. Work standardization is the key to eliminating human errors from manufacturing and service processes. Work standardization is not just the creation of job instructions-it is a comprehensive approach in which employees are formally trained and their skills in the area of work improvement are developed by kaizen sessions. With poor instructions, though, the effectiveness of these two key activities in the work standardization process is practically impossible to achieve.