Among the 11 members of the working group are moderate opposition politicians Roza Otunbaeva and Ishenbay Abdyrazakov.
However, representatives of the opposition bloc the United Front for a Worthy Future for Kyrgyzstan started a hunger strike today, rejecting the idea of establishing the working group for constitutional reforms.
They want instead the resignation of President Kurmanbek Bakiev.
"Our [main] demand is not constitutional reform," United Front member Beknazar Orunov told RFE/RL today. "Our demand is the resignation of Bakiev. He has established many such constitutional working groups before. Why is he moving us to different sides like a juggler? There won't be any reform in our [country] unless he goes."