Ann McLaughlin Korologos will not seek reelection to Microsoft's board of directors, the company said today.

Korologos, chairman of the Rand Corp. think tank and former U.S. Secretary of Labor under President Ronald Reagan, was elected to Microsoft's board Jan. 27, 2000.

In a statement, Microsoft said Korologos' decided to step down to devote more time to other professional and personal commitments.

"I have thoroughly enjoyed my tenure on the board of this worldwide, highly respected company; however, new responsibilities and opportunities force me reluctantly not to seek re-election," Korologos, 63 at the time of Microsoft's last proxy filing, said in the statement.

She is one of two women on the 10-member board. Microsoft did not say in the statement who might be nominated for election to Korologos' board seat.