Vermani & Premila's model of evaluation involves 3 stages: pre-training evaluation before training, context and input evaluation during training, and post-training evaluation after training. David Reay's approach to evaluation also has 3 stages - the trail phase involves informal testing, the ongoing phase focuses on validation and formative evaluation, and the final phase seeks answers about how well training needs were identified and objectives were met. The case study describes evaluating training for a manufacturing company's production department by identifying job responsibilities, skill needs, conducting training, and re-evaluating skills after through observation and interaction.