Technically, there was a walker that went from the place of employment searching for an occupied dwelling to source employees from. But you are correct that there weren't agents that tracked where each individual citizen was at any given moment.
Tropico, on the other hand, does have every employee individually modeled.
And I believe Children of the Nile, which is something of a spiritual sequel to Pharaoh, also tracked individual citizens as agents.
I'm surprised the Tropico series isn't getting much love here, I discovered it on personal recommendation after the disappointment of SimCity 5 and it's really a fantastic substitute.
I found the games to be not challenging enough, and they seem to crank out sequels far too quickly with too little changes to justify the price tag. This just rubs me off wrong, with sim titles like that I expect to sink several years into them.
Tropico, on the other hand, does have every employee individually modeled.
And I believe Children of the Nile, which is something of a spiritual sequel to Pharaoh, also tracked individual citizens as agents.