He joined the group as secretary in 1996, four years after retiring from his job as a school principal in Mataura.
He moved back to Dunedin to care for his mother.
"I could not run a school and my property and spend every weekend at home looking after my mother.
"I opted to take early retirement so she did not have to go in a home."
Mr Horne (76) enjoyed being an active member of Volunteering Otago and the fellowship he gained from it.
"Because of my involvement in the community I know lots and lots and lots of people."
Since his retirement from teaching, he has been involved in about 30 organisations and spends most of his days writing minutes and reports, sending reminders to members and attending meetings.
He enjoyed the role, as he could do the work when it suited him.
"I find doing minutes and reports quite relaxing."
Most of the boards and committees met monthly and he could have up to six meetings in one day, he said.While he will still be involved in other organisations, he had to "cut down a bit" so will retire from a number of boards.
Mr Horne is a keen traveller and hopes to jet off on his next adventure in December, when his health improves.
"I tend to go once to a place, because I’m collecting countries."
He started with Australia and gradually moved on to New Caledonia and surrounding places, he said.
Able to speak French, he enjoyed travelling to French-speaking countries and has been to every French territory.
He also volunteers as a reader at Bathgate Park School once a week and is secretary of Friends of Bathgate Park School.
"During the morning we have three students, one by one, and they spend time with us. It’s the opportunity for them to have a one-on-one experience so they read to us and we read to them.
"Also, if they want to chat ... we are there as a listener to listen to them."
