Ok - I have this city that flips to me. Has wines, which is cool. Has 4 pop and I'm expecting to be at war with this civ soon, so I send a settler up there to settle 1 tile to the NW (better location) and I put two of the pop as tax collectors (to stop pop growth) and start building workers (which come out as slaves). I'll abandon the city once pop hits 1 and build the new city right next to it for the grapes. My question - when I build the worker/slave, will that slave require monetary support like my other workers, or is it free labor like other slaves? And, if the slave requires monetary support - how can I distinguish it from other slaves if I want to disband it to save gold?