(Reuters) – U.S. employers are struggling to fill jobs and that is unlikely to change any time soon given the labor market is getting quite tight, Federal Reserve Bank of Philadelphia President Patrick Harker said on Tuesday.

“We have a labor market with very little slack left, and the most common refrain I hear from employers is that they can’t fill the jobs they have,” Harker said in prepared remarks to a conference on higher education. “Those demographic and technological pressures are unlikely to recede.”

The unemployment rate fell to near a 49-year low of 3.7 percent last month.

(Reporting by Jonathan Spicer; Editing by Chizu Nomiyama)