Pope Leo XIII: Catholic Social Justice and Rerum Novarum, Confronting the Modern World
O’Malley writes: “Rerum Novarum is a long encyclical. It reaffirms previous papal condemnations of socialism and communism. But its tone throughout is serene, and free from rant.” “While it proclaimed private property as a natural right, it insisted it had its limits. If private property was a right, so was the right of the worker to a just wage and to humane working conditions. Most remarkably, the encyclical endorsed the right of workers to organize in order to obtain and secure their rights.”
Pope Leo XXIII was labeled the Social Pope and the Pope of Workers since he endorsed the necessity of paying workers a living wage that enables the worker to feed, clothe, and house his family with dignity. Rerum Novarum encouraged the formulation of social justice doctrine, leading to the Catholic concept of the preferential option for the poor. Subsequent popes endorsed the theology of this encyclical: Pope Pius XI issued the encyclical Quadragesimo Anno, Pope Pius VI issued Octagesima Adveniens, and Pope John Paul II issued Centesimus Annus on the fortieth, eightieth, and hundredth anniversary of Rerum Novarum. In addition, Pope John XXIII issued Mater Et Magistra on social justice. […]