"Brexit would be a catastrophe for Switzerland. The Swiss franc will grow stronger and stronger. That would be very bad for our economy," Elisabeth Schneider-Schneiter, who is also a member of the National Council's Foreign Affairs Committee, said.
Earlier in the day, head of the Swiss National Bank Thomas Jordan told reporters that the Swiss economy could face turbulence if Britain opts to exit the bloc, vowing to "take measures if required."
The Swiss franc, long considered a safe haven currency and already overvalued, has seen its value surge again following the publication at the weekend of polls suggesting that Brexit could win the day in the June 23 vote.
A stronger franc negatively affects Swiss exporters, as it forces them to squeeze costs and lower prices to remain competitive on an international market.
