IntroductionAccording to the introductory description in the Trader Joe's case study provided, it is quite evident that Trader Joe's, a multi-billion dollar supermarket chain, cannot be compared to an ordinary general merchandise mall food as it has managed to thrive amidst growing competition. Trader Joe's has managed to gain a competitive advantage in the industry by focusing on key skills for leadership success that are emphasized by emotional intelligence, such as self-awareness, social awareness, self-management, and relationship management (Golinger, 2009; Hughes & Terrell, 2012). However, this case study seeks to examine the approaches used by Trader Joe's to promote a positive work environment to increase job satisfaction and the management process used to develop its employees (Ager & Roberto, 2013). Additionally, it suggests ways in which the four EI competencies can be used by leaders to effectively manage relationships, as well as recommending best leadership practices to increase Trader Joe's competitive advantage. Promoting a Positive Work Environment (Job Satisfaction and Performance) Employee satisfaction is often based on several needs-based criteria. Planning is an important management process that not only helps ensure employee productivity but also enables effective allocation of organizational resources, both financial and human. Based on the Trader Joe's case study, part of the employee development management process includes training employees through training programs such as Trader Joe's University. Furthermore, the fun design of the employee workplace provides a feeling of serenity to the employees. In fact, Schermerhorn (2012) states that this approach provides employees with the freedom to be themselves, as well as nurturing employees