A top Federal Reserve policymaker told CNBC Friday that interest rates may remain at rock-bottom levels for at least three more years and that more easing might be needed to combat high US unemployment and sluggish economic growth.
San Francisco Fed President John Williams, in an interview from Jackson Hole, Wyo., said he was "concerned that we could be stalling at the current high level of unemployment."
As a result, more bond-buying from the Fed in the form of quantitative easing (learn more) might help, he added. (Read more:What Do Markets Expect From Jackson Hole?)
"Without further accommodation I see the unemployment rate staying right around where it is now…at least for another year and a half," said Williams, who is a voting member on the Fed's Open Market Committee (learn more). He also stated he could see rates remaining at zero until 2015.