This case study investigates the implementation of a free-choice market system in community mental health services using the example of day centres for people with psychiatric disabilities. It was conducted in a major city that was about to implement a free-choice market system due to a new legislation that made it feasible. Eighteen semi-structured interviews were conducted. Agents situated in different parts of the organization were interviewed one year before and two years after the free-choice system was launched in 2010. Data showed a top–down political process. A majority of the intentions of the legislation advocated individual autonomy as the market system's main purpose; only one concerned organizational efficiency. Data reflected,...