Social inequality, economic imbalances and greenhouse gas emissions are some of the greatest risks threatening society today. Society has become more aware of these risks and has started to demand firms to take more responsibility. During the last 30 years firms and mainly large firms has chosen to work with something called CSR. CSR stands for Corporate Social Responsibility which is the work firms engage with to take responsibility for environment and society as a whole. Scientists and business people has taken two sides towards CSR, one side argues that CSR cost more than it tastes and the other side argues that firms which engage with CSR will gain economic benefits. Despite the conflict between these two groups a majority of the largest firms has already chosen to work with CSR. One may wonder why firms choose to work with CSR?Purpose: The purpose of this thesis is to identify the underlying motives to why a couple of large Swedish firms choose to engage with CSR-work. Furthermore, co-workers at the firms investigated in this thesis will be interviewed about their perception of the CSR-work.