The patron saint of laborers is St. Joseph the Worker. The actual commemoration falls on the first day of May, but it is a good thing to remember him on Labor Day too, as a way of accentuating the dignity of labor and as a reminder of the spiritual dimension of work.
The teaching of the Church reaches back into the Old Testament, when we read in the Book of Genesis that God created man, and put him in the Garden of Eden to tend to it. From that time, God, who is the creator and ruler of the universe, has called men and women in every age to develop and use their talents for the good of others, and as a way of sharing in the creative work of God. In every kind of labor we are to remember that we are obeying the command of God to use our talents, and to receive the fruit of our labors. Our work allows us to provide for our own needs, and for the needs of those for whom we are responsible. It also allows us to show proper charity towards those who are in need.
As we celebrate Labor Day, we should look to St. Joseph and follow his example of work, by which he showed his love and responsibility for the Blessed Virgin Mary and for the Child Jesus. St. Joseph shows the dignity of work – and whether it is manual work, or any other kind of work, we are to do it in a spirit of cooperation with God, and as an offering to Him. Any task, well done, is an offering to God. When we work, we should see it as a work done for God, and it is part of what shows that we are created in His image. In creation itself, God worked for six days, and rested the seventh. So in our own lives, we are to keep that balance between using our energy for work, and then out of respect for our minds and bodies, give a day for our spiritual and physical renewal.
Almighty God our Heavenly Father, who declarest thy glory and showest forth thy handiwork in the heavens and in the earth: Deliver us, we beseech thee, in our several occupations from the service of self alone, that we may do the work which thou givest us to do, in truth and beauty and for the common good; for the sake of him who came among us as one that serveth, thy Son Jesus Christ our Lord, who liveth and reigneth with thee and the Holy Spirit, one God, for ever and ever. Amen.