If healthcare is provided, then that means sick workers will be able to get back to work even quicker right? Means no lost hours. No lost job positions. No lost salaries. That means they earn more money... to guess what? Buy things. If they buy things, it creates more demands... which encourage people to produce more.
Not that I agree with it... but... I have other reasons not to agree with healthcare-- and it's not an economic one either. The economic reasoning behind providing healthcare is sound; the political or civil reason is debatable though.
It'd be fine except there is no money to fund all these programs. It is a program that continues to expand and grow. It is simply unsustainable. States recognize this.