Organizational culture refers to the shared values, beliefs, attitudes, and behaviors that define an organization and shape the way its members behave and interact with one another. The way workers are expected to act and what is valued inside a company may have a major influence on their productivity on the job. Employees are more likely to be invested in their work, satisfied with their positions, and motivated if they work in a business with a positive culture. But, the opposite is true: a toxic work environment characterized by poor morale, high turnover, and low productivity is the result of an organisation with a bad culture. The main objectives of the study is to find out the impact on employee job performance with reference to IT Sector. The study's aim is to assess how organisational culture affects employees' productivity in the IT industry. Performance thus serves as the dependent variable while culture serves as the independent variable. To determine the connection between employee performance and the culture of the chosen firm. The contributing company was chosen using a survey questionnaire based on its effective coverage and reasonable costs. 240 IT industry sample respondents were selected using a reasonable sampling technique. A well-designed questionnaire has been utilised to assess the impact.