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.
You know one could also labour so hard yet nothing to show for it. it's not just about working hard or labour it has to do with several things hence success or wealth can be created.
In my place their are set of people know for all the hard work, they can work so hard do everything but they still remain the lowest in wealth creation, in as much wealth is concern you must put lots of things in consideration to create the wealth you desire.