When the Swiss central bank abandoned its cap on the franc back in January, corporate Switzerland warned of an economic "tsunami" that would hit exports, hammer jobs and plunge the Alpine nation into a deep recession.
The dollar edged up against a basket of currencies on Friday as investors looked to U.S. jobs and wages data later in the day for further clues as to when the Federal Reserve might raise interest rates.
Oil prices fell to their lowest in five years on Monday, hit by slowing factory activity in China and Europe and hammering emerging market stocks and commodity-linked currencies.
Gold prices tumbled on Monday after Swiss voters overwhelmingly rejected proposals to boost gold reserves in a referendum, joining the broad rout in commodities that sent oil prices to five-year lows and copper to four-year lows.
The Swiss National Bank faces the biggest test of its cap on the franc in two years but may find it easier to defend now than when euro zone breakup fears were rampant and the strategy unproven.