Employee turnover is one of the major issues that organizations are facing. It is important to find the expectation and satisfaction of employees working in the organization to reduce the turnover cost and retain the talents. This study aimed to determine the strategies for the retention of Millennials working in the IT departments in Ireland, as the millennial generation is the younger generation and significant workforce with less retention rate. So, by identifying the retention strategies, this research helps the organizations to reduce the employee attrition. Apparently, Mixed method approach is carried out in this research. The quantitative research method was conducted among the millennials working in the IT department in Ireland to understand their expectation to retain in an organization and the senior managers working in public and private IT departments in Ireland from other generations were aimed in Qualitative research method to understand their opinion about retention strategies especially for millennials.