The paper aims to investigate the characteristics of law in the context of a conception of justice oriented by an «immanent normativity». The author assumes the self-realization of the subject as a normative principle, conceiving it as declinable starting from the decision of the subjects within the dialectical relationship that binds them to the external world. In this way, the matrices of normativity with which this idea of justice is charged are traced within the dynamism that animates social relationality. In this framework, the dialectical relationship between subject and object is first investigated by drawing on Antonio Labriola’s reflections on the «philosophy of praxis». Secondly, two possible «channels of immersion» of the law in an immanent normativity are analyzed: interpretation and conflict. Some guidelines of the «critical theories of law» will be put into dialogue with the reflections around the «ethics of care», to outline an idea of law rooted in the forms of life, capable of giving expression to the concrete needs and requests that they mature within the social relations, beyond an idea of justice theorized «a priori».