The yen will fall to 110 per dollar as early as this year, hurting Japan's economy as wages lag behind inflation driven by higher import costs, former Finance Ministry official Eisuke Sakakibara said.
The yen touched a six-year low last week amid speculation the Bank of Japan will maintain unprecedented bond purchases to reach the 2 percent inflation target as the Federal Reserve ends quantitative easing this year.
The currency has so far slid 2.9 percent this month, on track for its biggest loss since last November.
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