I don't know that there needs to be a union per-se (it's actually never brought up in the article at all), but collective bargaining can work without one, on a

I don't know that there needs to be a union per-se (it's actually never brought up in the article at all), but collective bargaining can work without one, on a company level. It would take a tremendous effort to make that change within a company like Amazon, but that company is probably one of the best examples where that change needs to happen. Costco is an example of a company where even the lowest paid employees are still fairly compensated, are guaranteed vacation, and receive good benefits. It's the company culture and values that dictates how the lowest paid employees are treated, and that can be directed and redefined, at least according to the author, in large part by the highest paid employees.