I believe stock options are usually taxed; but since you are buying it via employer. . you get a really good discount (ie 15 percent discount at lowest price of the 6 months), so really. . it negates the tax for most purposes.
We get paid about 6000 a month after taxes more or less. After saving for retirement (your 401k); + stock options. . ., you would end up with 4000 a month which is not bad at all.
At the same time, (if your employer matches the first 6 percent of your 401k plan (about 6k), + 2400 (401k + stock options) a month = 3k X 12 months = 36k/year), you will end up with about 3 million dollars after 20 years at a
conservative 10 percent return (with miminal risk via CD accounts), 6.5 million in 30 years, and 17.5 million in 40 years. This means you can live a pretty healthy life, with almost no risk at the age of 65. Of course, if you were to get a better return (15-20 percent) via a honest financial company through ETFs and mutual funds, that amount can skyrocket to 317 million dollars.
http://www.moneychimp.com/calculator/compound_interest_calculator.htm . . .