In recent years, several political theorists have argued that reasonable principles of justice are practice-dependent. In this paper it is suggested that we can distinguish between at least two main models for doing practice-dependent theorizing about justice, interpretivism and constructivism, and that they can be understood as based in two different conceptions of practices. It is then argued that the reliance on the notion of participants that characterizes interpretivism disables this approach from adequately addressing certain matters of justice and that a better way of developing the idea of practice-dependence can be found in a constructivism that starts from the Rawlsian idea of overlapping consensus, but which shifts the focus of that approach from societies to a more open-ended category of domains, and which understands the parties to a possible overlapping consensus as stakeholders in a certain set of interconnected practices.