This e-booklet examines the close relationship between employee happiness and organizational sustainability. It highlights how employee satisfaction and happiness impact productivity and loyalty to the organization, contributing to long-term company goals. Through real-life examples and reliable research, the booklet offers innovative strategies to enhance employee happiness and create a positive work environment. The booklet aims to provide practical guidance for managers and business owners on how to build a supportive work culture that enhances employee well-being and business sustainability.