<<Are these costs, presently, costs to the treasury?>>
Well, sure - - lost worker hours reflect on the balance sheet of the employer, meaning diminished tax revenues. Social costs of premature deaths of family members leading to dependent maladjustment in society can be ultimately borne by the Treasury. I mean basically in one way or another a healthier happier and more productive citizenry is going to be less of a drain on the Treasury than a bunch of sick, maladapted misfits.