16 Within the Broad Context of Human Rights While work, in all its many senses, is an obligation, that is to say a duty, it is also a source of rights on the part of the worker. These rights must be examined in the broad context of human rights as a whole, which are connatural with man, and many of which are proclaimed by various international organizations and increasingly guaranteed by the individual States for their citizens Respect for this broad range of human rights constitutes the fundamental condition for peace in the modern world: peace both within individual countries and societies and in international relations, as the Church's Magisterium has several times noted, especially since the Encyclical Pacem in Terris. The human rights that flow from work are part of the broader context of those fundamental rights of the person. However, within this context they have a specific character corresponding to the specific nature of human work as outlined above. It is in keeping with this character that we must view them. Work is, as has been said, an obligation, that is to say, a duty, on the part of man. This is true in all the many meanings of the word. Man must work, both because the Creator has commanded it and because of his own humanity, which requires work in order to be maintained and developed. Man must work out of regard for others, especially his own family, but also for the society he belongs to, the country of which he is a child, and the whole human family of which he is a member, since he is the heir to the work of generations and at the same time a sharer in building the future of those who will come after him in the succession of history. All this constitutes the moral obligation of work, understood in its wide sense. When we have to consider the moral rights, corresponding to this obligation, of every person with regard to work, we must always keep before our eyes the whole vast range of points of reference in which the labour of every working subject is manifested. For when we speak of the obligation of work and of the rights of the worker that correspond to this obligation, we think in the first place of the relationship between the employer, direct or indirect, and the worker. The distinction between the direct and the indirect employer is seen to be very important when one considers both the way in which labour is actually organized and the possibility of the formation of just or unjust relationships in the field of labour. Since the direct employer is the person or institution with whom the worker enters directly into a work contract in accordance with definite conditions, we must understand as the indirect employer many different factors, other than the direct employer, that exercise a determining influence on the shaping both of the work contract and, consequently, of just or unjust relationships in the field of human labour.
Source: Laborem Exercens (Vatican.va)