It seems counterintuitive from the employer's perspective though in many cases. The best argument I found is that it expands the hiring pool. I think there's s

It seems counterintuitive from the employer's perspective though in many cases. The best argument I found is that it expands the hiring pool. I think there's some issues in practice long-term with that argument, but regardless, they are voluntarily spending more on compensation for existing employees without getting any additional value out of it.