But these organisations face a constant battle to keep going - members move on or get too old; funding gets cut and it gets harder to find the money for their enterprises.
So when Whanganui Volunteer Centre manager Sandra Rickey decided to hold an "I Dare You" campaign around Volunteer Managers Day on Wednesday in an effort to get more people involved in volunteering, the Chronicle was keen to get on board.
Six of our reporting team put their hands up to do a bit of extra-curricular work in the community. It is a small, drop-in-the-ocean contribution ... but every little helps.
And their stories over the course of this week - starting today on page 8 - will highlight the amazing work these groups do. And, hopefully, encourage a few more people to roll up their sleeves and get involved. They will find it an extremely worthwhile experience - just as our reporters did.
Ms Rickey supplied this quote:
"Volunteers are unpaid not because they are worthless, but because they are priceless."