Answer:
He justifies it by saying they're inhabitants of earth and are entitled to good wages because they need it to survive.
Step-by-step explanation:
John A. Ryan, in his book A Living Wage, discusses the idea that people have a right to living wage, and he states that it is even insisted upon in Christianity, "a worker is deserving of his wages" and also the fact that they live on Earth and cannot survive without money to buy and sell.