Labour for me is human productive effort towards achieving set target.To answer the question, labour may be wealth, in the sense that when others labour while you fold your harms and watch from where will the wealth come from? Wealth creation cannot be separated from human effort both mental and physical.
If you take a good look at the economy of these countries, America and China, you will see how strong their man power is. The development of a country mainly depends on the labor force, the country and nation that are hardworking can develop very easily. Countries that have large populations earn millions of dollars a year by exporting workers.