Pope John XXIII
Mater et Magistra §253
Mater et Magistra: On Christianity and Social Progress
253 In the name of God, therefore, and for the sake of the material and spiritual interests of men, We call upon all, public authorities, employers and workers, to observe the precepts of God and His Church and to remember their grave responsibilities before God and society.
Source: Mater et Magistra (Vatican.va)