I was a member of various commissions in my town... I considered it an honor to serve and refused any compensation, including reimbursements.
But I volunteered not only to serve but to be a conservative eye/voice.
I've recently heard from a local volunteer that the big incentive for being one is getting included on the county's health insurance.
Probably a good thing in the case of otherwise unpaid volunteer fireman and EMTs;not so good for busybody committee members.