noun
rehabilitation worker
A person who works in rehabilitation, often in a social welfare or correctional context. The term is a compound of 保護 (protection/care) and 委員 (committee member/worker), but it refers to a practitioner rather than a committee member.
彼は保護委員として、更生施設で働いている。
He works as a rehabilitation worker at a correctional facility.
Compound of 保護 (protection, care) and 委員 (committee member, person in charge). The exact historical derivation is uncertain, but the term is used in modern Japanese to denote a rehabilitation worker.