Why do you need to decrease salaries every week? Do you do increase them every week with an inflationary currency?
Because the purchasing power of the BTC grows quickly because of deflation, and the purchasing power of USD is kept pretty stable by the controlled inflation.
Although I get your point, it's still volatility. I don't see why deflation would be faster than inflation in the ideal case. Also, Bitcoin money supply is inflating like crazy at the moment, but the price is still increasing. So I'll re-phrase your argument to make it clearer for me:
"As an employer, I would prefer to pay salaries in a controlled currency, because exchange rate changes could be harmful to me otherwise."
I'll argue that, as an employer or an employee, I'd prefer some kind of contractual local control there, rather than an alien authority. It will be fairer for me as an employee, and more predictable for me as an employer. Sure, it would involve something I wouldn't have to deal with with State money, but technology can alleviate the burden here too.
Guys sell your gold now! Otherwise eventually it will drop to 0 and will be worthless!
Already beta-testing and tuning new coin. But I need Bitcoin stay alive to keep cryptocoin ecosystem healthy. 
