Pope John XXIII
Mater et Magistra §75
Mater et Magistra: On Christianity and Social Progress
75 We must notice in this connection the system of self-financing adopted in many countries by large, or comparatively large firms. Because these companies are financing replacement and plant expansion out of their own profits, they grow at a very rapid rate. In such cases We believe that the workers should be allocated shares in the firms for which they work, especially when they are paid no more than a minimum wage.
Source: Mater et Magistra (Vatican.va)