Mr Mann comes from True Direction Financial and will take on the role from retiring chief executive Douglas Latto while Mr Harvie has taken over the reins from Terry Rhodes.
Mr Mann thanked both Mr Latto and Mr Rhodes for their work over the years and said that the new appointments would build on their legacy.
“I would like to thank Douglas and Terry for the many years they have invested into developing the WSSA into the representative body it is today.
“We intend to build on their work so that members can continue to deliver vital superannuation services to everyday Australians throughout a period of massive transition,” he said.
Mr Mann said WSSA are involved in improving the financial literacy of thousands of members daily and he was proud to help continue that.
“The WSSA represents its members at an industry, government and regulatory level and our number one goal is to support them so that they can continue to provide their vital services to the many thousands of everyday Australians who need them.”