The economic, political, and social frameworks that each society has—its laws, institutions, policies, etc.—result in different distributions of benefits and burdens across members of the society. These frameworks are the result of human political processes and they constantly change both across societies and within societies over time. The structure of these frameworks is important because the distributions of benefits and burdens resulting from them fundamentally affect people’s lives. Arguments about which frameworks and/or resulting distributions are morally preferable constitute the topic of distributive justice. Principles of distributive justice are therefore best thought of as providing moral guidance for the political processes and structures that affect the distribution of benefits and burdens in societies, and any principles which do offer this kind of moral guidance on distribution, regardless of the terminology they employ, should be considered principles of distributive justice.
Stanford Encyclopidea of Philosophy