I am conservative, but I disagree with this author.
Unions are not a socialist concept primarily. They are, rather, a concept adhered to by Christians as a balancing force between management and capital to insure a living wage for the worker and a reasonable return on investment for capital.
That unions goer too powerful and need to be reined in and that capital gets too powerful and need to be made pay just wages is obvious, but unions have their place.
“Ensure a living wage” is a non-concept, it’s just a slogan.
Read some Sowell (Basic Economics) and then post.