The Person-Environment Fit theory has primarily been concerned with a person's working environment in predicting her/his psychological well- being. Research studies show that a person's environment comprises not only of the work environment but also a combination of work and family environments. The existing literature presents five forms of the extended person-environment fit phenomenon, namely, person-job fit, person- group fit, person-supervisor fit, person-organization fit and person- family fit. Since employees' psychological well-being is a significant factor influencing the success of any organization, this study intends to investigate the impact of a person's environmental factors (person-job fit, person-group fit, person-supervisor fit, person-organization fit and person-family fit) on her/his psychological well-being. A significant theoretical contribution of this study is the extension of the person- environment fit construct in envisaging an employees' psychological well- being. Hypotheses testing confirmed that person-job fit, person-group fit, person-supervisor fit, and person-family fit are positively related to psychological well-being while person-organization fit becomes an insignificant factor in determining psychological well-being. However, taken as a whole, the extended person-environment fit construct is positively related to psychological well-being. From the management perspective, this study reveals that organizations should ensure good fit between an employee and her/his job, group, supervisor, and family as these factors result in enhancing employees' psychological well-being. [ABSTRACT FROM AUTHOR]