Yellen, Janet L. on 2017 September 26 at 10:42
It would be imprudent to keep monetary policy on hold until inflation is back to 2 percent.
How should policy be formulated in the face of such significant uncertainties? In my view, it strengthens the case for a gradual pace of adjustments. Moving too quickly risks overadjusting policy to head off projected developments that may not come to pass. A gradual approach is particularly appropriate in light of subdued inflation and a low neutral real interest rate, which imply that the FOMC will have only limited scope to cut the federal funds rate should the economy be hit with an adverse shock. But we should also be wary of moving too gradually. Job gains continue to run well ahead of the longer-run pace we estimate would be sufficient, on average, to provide jobs for new entrants to the labor force. Thus, without further modest increases in the federal funds rate over time, there is a risk that the labor market could eventually become overheated, potentially creating an inflationary problem down the road that might be difficult to overcome without triggering a recession. Persistently easy monetary policy might also eventually lead to increased leverage and other developments, with adverse implications for financial stability. For these reasons, and given that monetary policy affects economic activity and inflation with a substantial lag, it would be imprudent to keep monetary policy on hold until inflation is back to 2 percent. Yellen, Janet L.
NABE Annual Economic Policy Conference