Rerum Novarum (On the Condition of Workers)

In protecting the rights of private individuals, however, special consideration must be given to the weak and the poor. For the nation, as it were, of the rich, is guarded by its own defenses and is in less need of governmental protection, whereas the suffering multitude, without the means to protect itself, relies especially on the protection of the State. Wherefore, since wage workers are numbered among the great mass of the needy, the State must include them under its special care and foresight. (#54)

Labor which is too long and too hard and the belief that pay is inadequate not infrequently give workers cause to strike and become voluntarily idle.This evil, which is frequent and serious, ought to be remedied by public authority, because such interruption of work inflicts damage not only upon employers and upon the workers themselves, but also injures trade and commerce and the general interests of the State…(#56)

The following duties . . . concern rich men and employers: Workers are not to be treated as slaves; justice demands that the dignity of human personality be respected in them, … gainful occupations are not a mark of shame to man, but rather of respect, as they provide him with an honorable means of supporting life.
It is shameful and inhuman, however, to use men as things for gain and to put no more value on them than what they are worth in muscle and energy. (#31)

If the question be asked: How ought man to use his possessions? the Church replies without hesitation: “As to this point, man ought not regard external goods as his own, but as common so that, in fact, a person should readily share them when he sees others in need.

No one, certainly, is obliged to assist others out of what is required for his own necessary use or for that of his family, . . . But when the demands of necessity and propriety have been met, it is a duty to give to the poor out of that which remains. (#35-36)

When men know they are working on what belongs to them, they work with far greater eagerness and diligence. Nay, in a word, they learn to love the land cultivated by their own hands, whence they look not only for food but for some measure of abundance for themselves and their dependents. (#66)

The oppressed workers, above all, ought to be liberated from the savagery of greedy men, who inordinately use human beings as things for gain. Assuredly, neither justice nor humanity can countenance the exaction of so much work that the spirit is dulled from excessive toil and that along with it the body sinks crushed from exhaustion. The working energy of a man, like his entire nature, is circumscribed by definite limits beyond which it cannot go. (#59)

Equity therefore commands that public authority show proper concern for the worker so that from what he contributes to the common good he may receive what will enable him, housed, clothed, and secure, to live his life without hardship. Whence, it follows that all those measures ought to be favored which seem in any way capable of benefiting the condition of workers. Such solicitude is so far from injuring anyone, that it is destined rather to benefit all, because it is of absolute interest to the State that those citizens should not be miserable in every respect from whom such necessary goods proceed. (#51)

If, therefore, any injury has been done to or threatens either the common good or the interests of individual groups, which injury cannot in any other way be repaired or prevented, it is necessary for public authority to intervene. (#52)

It must not be supposed that the Church so concentrates her energies on caring for souls as to overlook things which pertain to mortal and earthly life. (#42)