Asset Super's first ever employee finally decided to take a back-seat role last month after almost 20 years at the fund.
Customer relationship manager Alan Ellis, 69, cannot face leaving the fund altogether, so he will take on less demanding tasks after his 70th birthday.
Ellis was the only employee with the fund from 1988 to 1995, when Michael Dwyer was hired as general manager.
"Alan was the original Mr Asset Super. He was responsible for signing up every employer and their staff over those early years when he worked out of the boot of his car because Asset had no office premises until late 1995," Asset Super chief executive John Paul said.
Ellis will drop back to a part-time job, working two to three days a week.