Idleness? I wish I had some. Like Lightning4, I find there's always more than enough hauling to do, even five or six years in. An important reason for this is that my legendary producers stay hard at work.
My current fortress population is 147. Of these:
* 27 are children or nobles.
* about 13 (less during winter) handle everything to do with food (grow it, butcher/gather/fish it, process it, brew it, cook it, and haul it). Of these, perhaps 5 are pure Food Haulers (they also generally handle refuse, except when I allow dwarves to haul refuse from outside). The stronger foodies sometimes practice with catapults in winter.
* about 30 are in the military (this is unusually high for me, but it's a dangerous neighborhood). Of these, perhaps 60% are legendary-level in either mining or engraving. Dwarves swap in and out of the military to balance between heavy haulage, stat-boosting, and training. Most dwarves who come armed shuck off their encumbering ironmongery near the magma smelters and join the haulers or engravers.
* none are in either the Fortress or Royal Guards, and none will be until I start seeing some negative consequences for keeping 21 dwarves under my own command.
* about 25 make everything from mechanisms to steel armor, but, of these, about 5-10 will have run out of supplies or useful work and be helping with hauling.
* about 5-10 are doing engraving or mining to boost stats. The military is centered on legendary dwarves (there are some others but they are mostly garrison/trainees), and I need as many strong and agile haulers as I can get.
* perhaps 2-4 are training with catapults.
* about 3-5 are bedridden or in jail.
The rest - and we're now down to (on a very rough average) 40% of the total population - haul. They almost never do anything else. They are divided by strength: "Very Strong" and stronger dwarves (mostly Legendary miners and engravers) are "Hauler Heavy"s. The rest are "Haulers". I use the extremely useful program Dwarf Foreman, available in the Utilities section of the DF Wiki, to task entire categories of dwarves between job assignments. I want to shift 12 Hauler Heavies from stone to wood haulage? 5 seconds.
The current fortress has the economy on, so haulers sleep in the barracks ... on the Masterpiece beds. They don't have a lot of money but nobody gets a better night's rest. They need their beauty sleep too, because Armok knows they work harder than anyone!
[ October 12, 2007: Message edited by: Fedor ]