without monetary reward

See: gratis
References in periodicals archive ?
It is vital that we support those who are prepared to give up their time without monetary reward to overturn decisions which, if allowed to progress, will have disastrous consequences for our community
I'm sure all awards are well deserved and recognition for a lifetime of effort, more often than not without monetary reward.
When you serve at the volunteer level, you learn to motivate people even without monetary rewards.