Abstract—The Few factors contribute to the better performance of employees in business organizations. One of the significant factors that are so important for employees is job security and the stability of the organizations in terms of employment. Employees' job performance is associated with how employees feel secure inside organizations. This study intents to see how job insecurity negatively impacts the employees' performance in the banking sector. It also aims to detect the mediating role of work engagement across job insecurity and job performance. The questionnaire administers to 240 employees in private banks in the Nagpur district of India, and the data were analyzed through Correlation, regression, and mediation. The findings indicate job insecurity does not affect the performance of private bank employees. The details show that employees feel motivated when there is pressure as they have to work harder to have a greater chance to secure their positions in the absence of good performance. The study demonstrates that employees' work engagement partially plays a mediating role in job insecurity.