Over the last century, the nature of employment has changed dramatically, and this transformation continues at a dizzying pace today. Stress is largely attributable to the fluid nature of today's workplaces. The dangers of work stress on one's physical well-being cannot be overstated. Stress in the lives of employees in a company has a knock-on effect on the well-being of the organization as a whole. This study is to examine the impacts created by the dimensions of occupational stress on employees’ psychology towards work performance in the IT sector. The sample size consists of 213 employees. TechnoPark, Thiruvananthapuram are covered for the study. The selection of employees is carried out using the sampling technique of simple random sampling based on the list acquired from the IT companies. The collected data are analyzed using the SEM-AMOS modeling to understand the cause and effect relationship among the occupational stress and job performance of the IT employees. The occupational stress of IT employees is high which adversely affects their psychology health and work performance.