1 Thessalonians 4:11-12
New International Version
Make it your ambition to lead a quiet life, to mind your own business and to work with your hands, just as we told you, so that your daily life may win the respect of outsiders and so that you will not be dependent on anybody.

Pope John Paul II
Laborem Exercens, Encyclical on Human Work (pp 16-17), Pauline Books and Media 1981
The basis for determining the value of human work is not primarily the kind of work being done, but the fact that the one who is doing it is a person… Such a concept does away with the ancient differentiation of people into classes according to the kind of work done…In the first place, work is “for man” and not man “for work”.