On-the-job training received renewed interest during World War 11 when Allen's
program was expanded to include seven steps:
1. Demonstrate how to complete a task.
2. Review important points.
3. Demonstrate task again.
4. Let workers perform easier parts of the task.
5. Help workers perform the entire task.
6. Allow workers to perform the entire task, while being monitored.
7. Allow workers to perform the task on their own.
The seven-step approach to on-the-job training became known as "job instruction
training" and studies indicated that this approach led to increased productivity during
World War II.