for you salaries, if your talking state corps, make sure to run your gov sals at 75%+1 of your state corps, as a min
thats, 300 corp sals would mean a min of 226 gov sals
how ever, i don't really recommend that, thats what you need to prevent your teachers and doctors from leaving their jobs for a better life. what i actually recommend is running your gov and state corps at the same, because of how your pop pays you for supplies like cars, and food, it works better to keep the sals even
higher the salaries, the higher the countries running costs, in health, education, and military, running lower salaries will reduce your welfare some what, but the savings in cost can largely counter that, especially if you have a sizable military
running higher sals increases welfare, as a 2 for one bonus, it increases the country welfare, and on top of that, the corp welfare, it also increase income tax, and pop pay-in the the new and improved IF system, which is significantly better than what it was
so their is good and bad both ways, just what you want out of your country
sorry for the tanget