Catechism of the Catholic Church §1928 — excerpt
Society ensures social justice when it provides the conditions that allow associations or individuals to obtain what is their due, according to their nature and their vocation.
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.