A disability insurer says it has obtained a new, unsecured, $250 million revolving credit line.

Unum Group Corp., Chattanooga, Tenn., says it obtained the new credit facility from units of Wachovia Corp., Charlotte, N.C., and Bank of America Corp., Charlotte.

Unum has no current plans to use the facility, but will use any funds drawn for general corporate purposes, the company says.

“Though we have no current plans to access credit or to raise additional capital, we believe it is prudent to maintain our financial flexibility,” Unum Chief Financial Officer Robert Greving says in a statement. “The facility which we have announced today is consistent with our commitment to maintaining this flexibility…. Given the heightened liquidity constraints in the banking sector over the last 12 months, we view our ability to establish our current facility as a continuation of the financial markets validation of our company.”