We start slow. Bring in the bottom 10% of small fats. They'll be in and out quickly enough to return to the workforce. Then the next batch, and so on and so forth until we work our way up to the death fats. That gives them the time to see it coming and either get unfat or kill themselves. Either way society wins. Edit: just realized how many people 10% would actually be...let's go with 1%...I forgot how goddamn fat North America has become.