Pressure is mounting on the Swiss national bank to intervene to slow the franc's relentless rise.
The currency is up 3% already this year - and climbed 14% last year.
Exporters say the strength is a curse. Large manufacturing, such as Roche and Swatch say they expect sales to be hit as their products are more expensive.
Swiss shares are also being hit as multinationals will be reporting lower profits in francs.
Analysts suggest the Swiss National Bank may have to consider negative interest rates again.
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