The ESSSuper board has accepted the resignation of chief executive Don Kofoed, who has been forced to resign due to ill health.
According to ESSSuper, Kofoed's resignation has been accepted with "understanding but with great regret."
"Don has been a tremendous asset to ESSSuper over the last 12 months. His drive, leadership and total commitment to the organisation has inspired the management team," ESSSuper board president Frank King said.
During his tenure at the fund for emergency services workers and state sector employees, Kofoed extended the range of products offered to members and assisted in the development of the fund's online site.
ESSSuper chief financial officer Michael Dundon will act as chief executive while the fund searches for a replacement for Kofoed.
The fund has engaged Kathleen Townsend & Associates to conduct the search and plans to have the process completed by the end of June.
The incumbent ESSSuper chief executive will lead a team of 130 people.
ESSSuper has more than 150,000 members and $14 billion in funds under management.