The concept of „employee engagement‟ is rapidly gaining popularity and use in the workplace. It is a need of the organization but it having some confusion in the minds of business persons about its definition, how to implement and measured. Employee engagement (EE) can be defined as an employee putting forth extra discretionary effort, as well as the likelihood of the employee being loyal and remaining with the organization over the long period. Research shows that engaged employees: perform better, put in extra efforts to help get the job done, show a strong level of commitment to the organization, and are more motivated and optimistic about their work goals. Some organizations look towards EE as competitive advantage. Corporate results have proved that there is a strong link between conceptualization of EE, workers performance and business outcomes. This paper is based on conceptual research and reviews the current literature of EE, definitions, importance of EE, Importance of EE, and Elements of EE, Impact of EE, and Gallup 12 question model of EE, EE in India.