VicSuper chief executive Bob Welsh has announced his retirement and will step down at the end of this year.
The superannuation veteran has led VicSuper since the fund's inception on 1 July 1999, after it replaced the Victorian Superannuation Board as trustee and administrator of the VicSuper Fund.
The $7.7 billion fund has not yet announced a successor, but aims to have a new chief in place by June 2011.
VicSuper deputy chief executive Michael Geragthy will be acting chief executive after Welsh steps down.
VicSuper said Welsh was a pioneer in building a sustainable super fund, creating value for its members, employers and other stakeholders through the integration of economic, social and environmental considerations into all decision support systems.
Experience in sustainability would also be a prerequisite for a new chief executive, the fund said.
"In selecting a new chief executive, we have the responsibility to our members and employers to ensure the protection and enhancement of all the aspects that make VicSuper their fund of choice," VicSuper chair Barbra Norris said.
"VicSuper is synonymous with sustainability and it will remain central to our operations and investments," she said.