LONDON, MAY 2, 2006 (Zenit) - Here is a homily prepared by Cardinal Cormac Murphy-O'Connor for a Mass concelebrated today at Westminster Cathedral on the feast of St. Joseph the Worker.

The Mass was part of the May Day for Migrants, organized by the three Catholic dioceses of London in collaboration with London Citizens.

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Dear friends in Jesus Christ,

On behalf of my brother bishops of the Catholic dioceses of London, I want to extend a very warm welcome to you all on this feast of St. Joseph the Worker. And I want to thank the community organization of London Citizens, who have helped to organize this celebration today.

I want especially to welcome all the migrant workers and their families here today, who have come from other countries in search of work and new life here in London. We hope that this Mass will communicate to you that, as far as the Catholic Church is concerned, you are Londoners. We want you to feel welcome in our parishes and our schools and our ethnic chaplaincies. We want you to know that you belong.

For in the Catholic Church no one is a stranger; and the Church is not foreign to anyone, anywhere. The Church is "God's family on earth," as Pope Benedict said recently in his encyclical "Deus Caritas Est"; and in God, as we know, there is neither Jew nor Greek, neither slave nor free; we are all children of the same Father, and while we celebrate and respect our different cultures, we share a common baptism and a common dignity.

It is our earnest hope that during your time here in London, you are made aware of this by the hospitality and the welcome you receive from our parishes and schools. We stand in solidarity with you. We commit ourselves to your pastoral care and to work towards removing obstacles to you exercising your dignity and living as children of God.

Today is the feast of St Joseph the Worker. Jesus, the Son of God, dedicated himself for many years to manual labor, so that he was known as the "carpenter's son" (Matthew 13:55). The Church has always taught the dignity of work. Work is of fundamental importance to human fulfillment.

Yet for the same reason, by virtue of the value it retains in the divine plan, work must be carried out with full respect for human dignity, and must serve the common good. But work should not be idolized, and people should not be enslaved by it; if work is necessary, so too is rest. Rest from work gives time for families to build relationships, and for people to serve their communities; and that is why the right to holidays such as this Bank Holiday, and the need to limit commercial activity on Sunday, are essential.

It is a fact that migration can mean enormous hardships and suffering for the migrants. As we know, it has been encouraged and promoted in recent times to foster the economic development of both the migrants' host country and their country of origin. Many nations would not be what they are today without the contribution made by millions of immigrants.

But we should never forget that the migration of families, and women in particular, are marked by suffering. Sometimes immigrants are deprived of their most elementary human rights. It is very necessary to reiterate that foreign migrants are not to be considered merchandise or merely manpower. They should not be treated just like any other factor of production.

Every migrant enjoys inalienable fundamental rights which must be respected in all cases. Furthermore, the migrants' contribution to the economy of the host country comes together with the possibility of using their intelligence and abilities in their work.

This is especially true of undocumented workers, who have entered the country illegally. The Church has long taught that to migrate is a right, just as nations have a right to regulate immigration. The needs of immigrants must be measured against the needs of the receiving countries, and that the rights of these nations must not be exaggerated to the point of denying access to needy people from other countries.

The Church does not approve of illegal immigration, which makes people vulnerable to exploitation by people traffickers and divides families. But nor can the Church ignore the plight among us of those who are here without legal status, neither contributing through taxes nor benefiting from rights. We stand in solidarity with you too. The Church, said Pope John Paul II in his migration day message, "is the place where illegal immigrants are also recognized and welcomed as brothers and sisters."

Nor can the Church ignore that, while our nation benefits economically from the presence of undocumented workers, too often we turn a blind eye when they are exploited by employers. Illegal migrants should not be treated as criminals; no one leaves their country in search of work in another country unless they ...