The Training Within Industry (TWI) program, developed by the US during World War II, has been used by Toyota for decades. Winner of a 2006 Shingo Prize for Excellent in Manufacturing Research, this book elucidates the history and application of the four modules that comprise TWI. The author explores a crucial piece of a Lean initiative that is often overlooked. He demonstrates how to train employees to perform their tasks as quickly as they are capable with minimal waste, improve their processes using existing resources, solve personnel problems in an analytical, non-emotional manner so that employees stay focused, and develop robust training plans to meet the particular needs of a specific plant.