Explanation: I think you can choose any of the above, depending on your context.
You can say "ad-honorem services", "honorary services", or "unpaid services".
I would use "unpaid" or "ad honorem". I've heard of "honorary" mostly in an academic context (as in "honorary appointment at the university").
Explanation: I think you can choose any of the above, depending on your context.
You can say "ad-honorem services", "honorary services", or "unpaid services".
I would use "unpaid" or "ad honorem". I've heard of "honorary" mostly in an academic context (as in "honorary appointment at the university").