In recent years, the concept of Corporate Social Responsibility (CSR) has been widely studied. Scholars agree that employee involvement is crucial for successful implementation of CSR, however complexities exist as employee involvement in CSR is not always evident in organisations. While existing literature commonly address the importance of employee involvement, it seldomly devote attention to what factors affect this involvement and as such, does not focus of why certain factors are brought up. Moreover, as employees are key stakeholders in organisations, there is a need of including their voice to contribute with valuable insights to the field. The purpose of this study is first to examine what factors contribute to employee involvement in CSR activities, followed by the second aim of understanding why these factors are considered important with regard to employee involvement. As the nature of the study is qualitative, an interpretivist design is applied, with four companies acting as foundation for data. Primary data is collected through semi-structured interviews with the use of open-ended questions. A thematic approach is applied for analysing data. The empirical findings reveal five factors contributing to employee involvement in CSR and why those factors are important. These are (1) Coordination, as it helps provide clear guidelines anchored in deeper purposes, (2) Conditions, since varying tools enable those guidelines to be implemented, (3) Communication, because it allows employees to learn and be updated regarding CSR, (4) Concretisation of actions, by making CSR visible and easier to apply, and finally, (5) Community, since it fosters the mindset of shared responsibility and solidarity. These findings are visually presented in Figure 2 - The 5C-Model for Employee Involvement in CSR.