The Bible at 2 Thessalonians 3:10 reads:
For even when we were with you, we gave you this rule: “If a man will not work, he shall not eat.”
There are other related verses on the subject of work such as:
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 – 1 Thessalonians 4:11
The very craving of the lazy will put him to death, for his hands have refused to work. – Proverbs 21:25
Look! The best thing that I myself have seen, which is pretty, is that one should eat and drink and see good for all his hard work with which he works hard under the sun for the number of the days of his life that the [true] God has given him, for that is his portion. – Proverbs 5:18
More Bible verses on work can be found here.