His resignation follows the abrupt appointment of the former TBWA\Singapore art director Marcus Rebeschini as the chief creative officer for Asia.
Rebeschini returns after a spell at TBWA\Chiat\Day, New York, where he was an associate creative director.
The appointment is part of plans by Tony Granger, Y&R's global creative director, to revitalise Y&R's global creative output. Granger said: "We are recommitting to pushing our creative standards higher. Marcus will be an inspiring leader who will encourage creative collaboration."