Bernard Knobbe was named senior director, global benefits, at Yahoo! Inc., Sunnyvale, Calif., Mr. Knobbe confirmed in an interview.
Yahoo has a $750 million 401(k) plan.
Mr. Knobbe had been vice president for strategic benefits at ACS Inc., Dallas.
Neither Mr. Knobbe nor Dana Lengkeek, a Yahoo spokeswoman, would comment on whom Mr. Knobbe succeeded at Yahoo. Kevin Lightfoot, an ACS spokesman, declined to comment.