The purpose of this study is to explore the employee engagement which is predicted to be affected by rewards, work environment and work-life balance. This study also further investigates which factor (rewards, work environment and work-life balance) highly affects employee engagement. A quantitative survey questionnaire was developed which explores the behaviour, experiences, perspectives and feelings of respondents towards their engagement. Descriptive analysis, reliability analysis, Pearson's correlation analysis and multiple regression analysis were applied in this study to measure the relationships between independent and dependent variables. Based on data from the sample of 250 employees in a telecommunication organization in Klang Valley, work environment is the most influential factor that contributes towards employee engagement. This is followed by rewards and work-life balance consecutively.