The type of justice concerned with the distribution of benefits and burdens to different individuals and groups in a society.
This is the primary concern of so many modern philosophers who go on and on about the social contract or the greatest economic system ever.
One of the most widely-read theories of distributive justice is John Rawls' A Theory of Justice. It begins, "justice is the first virtue of social institutions, as truth is of systems of thought."
cf. retributive justice