Pope Pius XI
Quadragesimo Anno §60
Quadragesimo Anno: On Reconstruction of the Social Order
60 Yet while it is true that the status of non owning worker is to be carefully distinguished from pauperism, nevertheless the immense multitude of the non-owning workers on the one hand and the enormous riches of certain very wealthy men on the other establish an unanswerable argument that the riches which are so abundantly produced in our age of "industrialism," as it is called, are not rightly distributed and equitably made available to the various classes of the people.
Source: Quadragesimo Anno (Vatican.va)