Maybe YOU should read Locke. Natural Law is based on one's private property and the natural right to that property. This includes the wealth someone may accumulate. Walmart employees agree to sell their labor at a price. These terms are agreed to by both the employer and employee. Nobody "shang-hai's" people to work at Walmart. The terms of the agreement end with each paycheck. No employee at Walmart has a claim to any profits that are generated unless they partake in the risk of the business by being shareholders. I cannot understand how you could confuse Locke's Natural Law for Marx's Value of Labor Theory.