This paper aims to find the relation between employee happiness and workplace success in selected IT companies in Delhi NCR. The Study is descriptive in Nature. Different Factors that affect employee happiness have been identified and studied and the study has tried to establish the relationship between employee happiness and workplace success. The factors that lead to employee happiness have further been categorized into two categories as individual factors and organizational factors. Further some individuals factors and organizational factors have been selected to build a conceptual model determining how these factor lead to employee happiness and how that turns lead to workplace success. In time when human resource is of great value to companies a structures study act as to what leads employee to happiness and its effect on company success cab be vital for companies in formulating organizational and employee policies. It gives us social message that happy groups are more productive.