Announcing his decision to retire from the Legislative Council on 10 May 2011, Obeid issued a statement that his granddaughter, Gisele, was diagnosed with cancer tumours in her kidneys in November 2010 and that, despite an operation and extensive chemotherapy, recent scans suggest some of the tumours remain. He said: "My wife and I need to spend all our time supporting our son Moses and his wife Nikki through this difficult time." Following his announcement to retire, John Hatzistergos MLC also announced his intention to retire from the Legislative Council. Walt Secord, the former chief of staff to the former Premier, Kristina Keneally, and Adam Searle were nominated by Labor to fill the casual vacancies.
