Well said Rajneesh,
Unfortunately, there are a lot of opinions about how to create engagement but very very few who have actually done it. I know of only two other persons besides myself who have done it. The possible performance gain stated by none other than Stephen Covey as 500% is what I achieved and I believe anyone can achieve it.
The process is to listen to the concerns of employees, both one-on-one and in groups, and resolve those concerns to their satisfaction. The purpose is always to receive the complaints, suggestions and questions of employees and resolve those mostly with their help, by them using their brains.
Assuming this is an ongoing process affording each person the time to put in their two cents, they soon realize that they can influence everything. As that happens, they take more and more ownership of their work and the more ownership, the more commitment to doing a better job. Without ownership, no commitment! Have you ever seen anyone washing a rental car?
As this process proceeds and people come to trust that it will continue, they become more engaged, some at a faster rate and some slower. This process will be most effective if led by the CEO with management present to see firsthand how people should be treated.
The last time I did it I was a VP of a 1300 person unionized group so I was the one setting the standard for all my subordinate managers and supervisors. They got the message over a period of a few months by watching me in action. Then I had senior managers conduct the meetings and later lower levels. I sat in on many of these so as to be able to coach them in post-meeting sessions.
One of the keys is to get the people to develop solutions to problems with management merely helping with resources, etc to implement solutions. The same is true for suggestions and questions.
Besides providing resources, management's main functions are to protect everyone's rights to be heard and respected, and to ensure that the highest standards are met in every endeavor. The highest standard for a particular endeavor is not generally held by management but by one or more of the employees. So management must get everyone involved and always pose of the question of whether there is a higher standard we should meet for any value such as honesty, integrity, quality, respect, or whatever.
Hope this helps. Much of this information is available at my website
Leadership skills, methods and science for exceptional management of people.
Best regards, Ben