Regardless of which part of the world one is working in (Asia, Africa, Europe, the Middle East, or Pruneland), if you're paid in US dollars there is going to be a "link" between it and the local currency of the country in which you are spending the bulk of your income.
The drastic fall of Bush's peso, against the Japanese yen has impacted SIGNIFICANTLY on the amount of disposable income for those working in Japan, but paid in USD's.