I don't know if there is a "minimum wage" in SimCity 4, or if even the concept of a minimum wage is meaningful in a simulation game, but it seems to me there is a "lowest wage". For instance, if the simulation decides to build a "Depessies Diner," a few R$ jobs are created (waiters, waitresses, busboys, etc), a few R$$ jobs are created (the franchise owner, the overall manager of the restaurant, perhaps one or 2 others) and for that business, there are probably no R$$$ jobs created. My understanding is that rather than a bunch of individuals being simulated, several aggregators are updated, such as the number of R$ or R$$ jobs, the total number of low (medium?) wealth businesses, etc.
I looked for an articles where the "minimum wage" (or "lowest wage") might be calculated, or at least talked about, but I could find nothing. I am pretty sure that R$ are probably something like people with wages that are perhaps 1-3 times the lowest wage, R$$ are people with jobs that pay 4-10 times the minimum, and R$$$ jobs pay 11 and more times the minimum (or the appropriate counters are updated). If maxis or EA has said something "official" about that, I cannot find anything. If any one has done any calculations about this, I cannot find this either.
The closest I could find were some articles trying to establish an exchange rate between USD and simoleons, but the articles I found applied to the Sims and not necessarily SimCity. One said that based on the price of gold at the time, a simoleon is worth ~$15, so apparently gold can be pucrchased in the Sims, but not in SC4 (or at least there is no way I know of), Another article said this is wrong, and compared the price of cars in the Sims with their analog in the real world, and came up with an exchange rate of closer to ~2 to 3 dollars per simoleon. Though these were from the sims, I saw another article that made the contention that simoleons had the "same value" across the SimCity games, the Sims games, and any other spinoffs. O f course, a few years ago I did a calculation that based on the cost of a real tennis court vs. the cost of a tennis court in SC4, a simuleon came out to being worth ~$500.
Well anyway, back to my calculation of the "minnimum wage". I think I can take the total amount of taxes that are paid by R$ residents, mutiply it by 100/9 (11.1...) to calculate the total income of the R$ residents, then divide it by the number of R$ residents (or at least R$ wage earners) to get an average wage for R$ workers. Then I could do the same for R$$ and R$$$ wage earners (I don't think R$$$ residents are the same as R$$$ wage earners since a R$$$ resident might be a small child, and therefore not a wage earner., then play about with the ranges (for example assume that R$ workers make 1-3 times the minimum, and that R$$ workers make 4-10 times the minimum,etc.) to at least estimate the "minimum" or at least "lowest" wage. Or is that too simplistic way of doing it, and if it is too simplistic, what might be a better way. I also downloaded the CORIreports addon, and some of the numbers from those reports might be useful in making these "minimum wage" calculations, rather than trying to "guess" the numbers based on the charts/graphs given in the game.
Brian Christiansen