The message “idle not working” is driving me nuts! For example in my founder I have that message but have no clue as to why the problem or problems exists. They have coal, iron and gold so why are they not working. A better system then “idle not working” would more helpful untangling the chain and finding the problem.
As above the the message someone got “x” problem, “x” equalling disease broken bone and so on. We, the players no who the person is but where do they work. Knowing it is a forger and he or she is from the west side tell does not tell me where out six forgers on that side of the map that person belongs. It is a bit of nuance to search the map for the forager to find out if they have a well.
Conclusion could you implement a red building if someone is not working or has a problem and implement some type of help to figure out the cause. (Dang kids that get worms because they run bare foot is not my problem. 
(bad humour))