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.
Does slave labor create wealth for the slave? Of course not! Slave labor is a source of wealth for the slave owner.
Labor is one of the resources that can create wealth (either directly for the worker or for his master/employer).
Labor, being a resource, can be sold. Workers are hired for a fee by selling their labor. Entrepreneurs buy other people's labor, including this cost in the cost of goods produced.
However, you cannot get rich if you are only willing to work and are not willing to acquire new skills and knowledge. Highly skilled labor is paid better than low-skilled labor. Business is usually more profitable than hired labor. Investing usually brings more profit than business.
When formulating your life strategy, it is better to reduce the amount of your own labor in your income systems over time.