noun
welfare official; welfare worker
A public official responsible for social welfare services, such as a caseworker or social worker in a government office.
福祉司は生活保護の申請を担当している。
The welfare official handles applications for public assistance.
彼女は市役所の福祉司として働いている。
She works as a welfare worker at the city hall.
ケースワーカー is a more general term for a caseworker, while 福祉司 specifically refers to a public welfare official.
Compound of 福祉 (welfare) and 司 (official, director). The term is a modern administrative title.