Chief executive Bruce Watson will leave Mine Wealth + Wellbeing on 12 February as announced in September 2015, and will be replaced by interim chief executive Nicole Killen.
Mr Watson will leave the fund after 23 years of "exemplary service" to coal industry superannuation members, a fund statement said.
Board chair Grahame Kelly said the board is continuing its comprehensive search for a replacement chief executive, including consideration of internal candidates.
"We thank Bruce for his passion, leadership and commitment during his distinguished career and during this time of transition for the fund. The board and I wish him the very best for his future endeavours," said Mr Kelly.
"We know that the fund will continue along the path of achieving our strategic objectives under Nicole’s stewardship. We are confident in Nicole and our executive team’s ability such that we are able to take our time to ensure we find the right chief executive.
"The board and I believe the appointment of a ‘best fit’ chief executive who is aligned to the fund’s culture, has a commitment to building ongoing member benefits and can assist in positioning the fund to achieve its strategic objectives is the most important thing we can do right now," Mr Kelly said.
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