Japan’s exporters are benefiting from the weaker yen currency. However, with the yen trading at its lowest since 2008, rising import costs have many companies on edge, potentially weighing down Japanese stocks and related country-specific exchange traded funds.

The CurrencyShares Japanese Yen Trust (NYSEArca: FXY) has declined 6.3% over the past three months. The U.S. dollar traded as high as 109.44 yen on Friday.

The iShares MSCI Japan ETF (NYSEArca: EWJ) has declined 2.2% year-to-date.

Due to the quickly depreciating yen on growing expectations that the Federal Reserve will hike rates sooner than anticipated while the Bank of Japan may ease further, the currency’s decline now threatens to further aggravate costs for imported raw materials, reports Tetsushi Kajimoto for Reuters.

“Rising energy costs are concerns for manufacturers in Japan, which is heavily reliant on importing energy-related resources,” Fumihiko Ike, also chairman of Honda Motor Co, said in a news conference.

Now, three quarters of Japanese firms argue that the yen’s rapid descent is moving beyond comfortable levels, according to a Reuters survey. Only 25% of respondents prefer an exchange rate of 105 yen or weaker, 47% look for a 100 to 104 yen range and 28% prefer a yen at 99 to the dollar or stronger.

“Our business is slowing due to a marked increase in the cost of imports caused by the weak yen,” an executive at a textile manufacturer wrote in the survey. “Retail sales at department stores remain slack.”

Additionally, with the sales tax weighing on the economy, 73% of respondents believe the government should create new stimulus measures if they want to proceed with a further sales tax hike to 10% from 8%. [Why Japan ETFs Have Been Unable to Breakout]

Looking at EWJ’s allocations, consumer discretionary is the ETF’s largest sector component at 20.8%, followed by industrials at 20.2%.

iShares MSCI Japan ETF

For more information on Japan, visit our Japan category.

Max Chen contributed to this article.