Southwest Airlines co-founder Herb Kelleher will preside over his last annual meeting at the airline on Wednesday. Kelleher, who helped found Southwest 37 years ago, will continue to work for the carrier, but his contract does not state his duties. He has served as a board member, executive chairman, president and chief executive of the carrier. "I enjoy work. You can refer to me as a drone, a worker bee. I always have enjoyed it," Kelleher said. "I hope I can still be useful."