An engaged employee is the most valuable asset of any organisation for they are the key drivers of business activities. This empirical study aims to analyse the relationship between the variable of employee engagement and its antecedents. The selected dynamics of employee engagement, identified through a thorough desk research, are organisational culture, leadership, high-performance work practices and rewards. Non-probability convenience sampling is utilised as the sampling method to test four hypotheses, using data gathered from 169 executives from an Information Technology Company located in Colombo, Sri Lanka. The results showed that high performance work practices and rewards have significant, positive relationship with the construct of employee engagement.