This investigation is to determine the impact of seminal motivational theories and practices on employee performance and job satisfaction in addition to determining the existence and significance of specific motivational factors for the successful improvement of employee performance and job satisfaction in the modern business world. The research draws on various secondary data and literature to explore and critically analyse the constructs, models and principals of several key motivational theories whilst primary research is conducted through a web-based survey to develop a comprehensive investigation into possible determinants of employee motivation. The subsequent findings found age to be a significant factor with regard to the five...