Dear Priyanka,
Engagement is not created by activities; employees decide to engage themselves in their work based on how they are treated by management. If they are treated with great respect by management, employees will choose to become engaged.
Management does this by listening to what they have to say often enough to satisfy their need to be heard. Then management responds to what was said to the satisfaction of the employee or better, and this satisfies their need to be respected. Management at all levels must do this all the time, not just once or twice.
Once employees realize that this will always be done, they realize that they can influence everything in the workplace. This ability to influence everything begets a sense of ownership, a sense that it is their workplace just as much as it is anyone's. In a similar manner, a sense of ownership begets commitment, and that gets you engagement.
A fully engaged workforce is emotionally driven to throw everything they have at their work because they have been treated so well. In this state, they apply 100% of their brainpower to their work, meaning all of their natural creativity, innovation, and productivity, thus making them at least 300% more productive than if partially disengaged.
I hope that helps you, Ben
Leadership is a science, and so is engagement