rupertslander
Chieftain
Just as the tiles require laborers, some improvements, such as factories, should require one or more laborers to operate. If no laborer is available, the improvement, and any improvement requiring that improvement to build, would stand idle.
Also, laborers should be paid a wage (which you could regulate). This might lead to unemployment.
Also, laborers should be paid a wage (which you could regulate). This might lead to unemployment.