256 That a man should develop and perfect himself through his daily work—which in most cases is of a temporal character—is perfectly in keeping with the plan of divine Providence. The Church today is faced with an immense task: to humanize and to Christianize this modern civilization of ours. The continued development of this civilization, indeed its very survival, demand and insist that the Church do her part in the world. That is why, as We said before, she claims the co-operation of her laity. In conducting their human affairs to the best of their ability, they must recognize that they are doing a service to humanity, in intimate union with God through Christ, and to God's greater glory. And St. Paul insisted: "Whether you eat or drink, or whatsoever else you do, do all to the glory of God." (54) "All whatsoever you do in word or in work, do all in the name of the Lord Jesus Christ, giving thanks to God and the Father by him." (55)
Source: Mater et Magistra (Vatican.va)