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.
Labor is definitely an asset and it is termed as valuable asset. The economic standard of a country mainly depends on the labor force of the country. The more advanced the labor force is in the country, the more developed the country is. Like health is a valuable asset and without good health the body is not good, just as labor power is a valuable asset for a country and because of this labor power a country is prosperous. Moreover, if the developed countries of the world are taken as idols, then you can research there and see that they are so developed and rich mainly because of the labor force.