Longman Dictionary of Contemporary English
aid worker
noun
EXAMPLES FROM CORPUS
▪ As a volunteer aid worker I was a failure.
Wiktionary
aid worker
n. Someone who works for a charitable organisation devoted to helping others, especially one who works internationally or in conflict zones.
Usage examples of "aid worker".
In the belt's scorched pouch was Newman's false passport for his identity as a UN aid worker, along with a Visa card with the same name, and an international driver's license with his picture.
He had joined late in his career, after working as an aid worker in Africa.
Some earnest aid worker in a khaki jungle outfit, with netting under the arms and a hundred pockets.