Employee engagement can boost business productivity in several ways: 1) Engaged employees are willing to go above and beyond, which increases discretionary effort. 2) Engagement leads to better alignment between employee and company goals, allowing for more delegation and decentralization. 3) Engaged employees provide valuable insights into customers that can drive innovation. However, engagement initiatives often fail due to barriers such as lack of work-life balance, limited career development opportunities, ineffective leadership, and poor implementation of HR policies and practices. Building trust and establishing effective employee voice mechanisms are important for sustaining engagement.