•Summary: This article explores a relatively uncharted research area. The focus of the analysis is on how professionals working in care provision units, specialized prostitution units, the police, social services and special schools detect and deal with prostitution among people with intellectual disabilities. The data were obtained primarily through focus group interviews. The study shows that organizational specialization in different authorities and services makes it difficult to identify and work with this group. Clients with complex problems tend to find themselves in between the jurisdictional fields of different authorities, meaning that many do not receive the support that they need.
• Findings: In recent decades social work has undergone increasing balkanization and specialization. Each particular organization is regulated by specific legislation, regulations, forms of knowledge and normative assumptions. Professionals working with people with intellectual disabilities have difficulties in detecting prostitution among their clients, whilst those who work with prostitution lack the knowledge and methods to work with intellectual disabilities. At the same time, social work with these individuals is conducted within a field of tension between the client’s right of self-determination and professionals’ responsibilities for their well-being.
• Applications: The study demonstrates that, with this type of complex problem, it is important to establish different types of collaboration between different organizations. However, due to the risk of increased control being detrimental to clients, collaboration needs to be founded on the client’s needs and right to self-determination.