Mr. Kessler, 41, was worldwide account director at Interpublic's Foote, Cone & Belding Worldwide, New York, on the AT&T Corp. business. FCB lost the $400 million wireless component in the summer to WPP Group's Ogilvy & Mather Worldwide, New York.
Separately, FCB said it is laying off 50 to 75 people -- about 10% of its New York staff -- as a result of the loss.
Meanwhile, Hill Holliday, San Francisco, called off the acquisition announced in February of SF Interactive, San Francisco and Washington, D.C. The companies will still work in a "strategic partnership." SF Interactive has 45 employees, down from 150 a year ago.