noun
professional uniform; occupational attire
Refers to uniforms or attire specific to a profession, such as a doctor's coat, a judge's robe, or a chef's uniform. Emphasizes the clothing as a symbol of the occupation.
医者は白い職服を着ている。
The doctor is wearing a white professional coat.
裁判官の職服は黒いガウンだ。
A judge's professional attire is a black gown.
noun
work clothes; coveralls
Refers to practical work clothes, such as overalls or coveralls, worn for manual labor or industrial work. Less formal than sense 1.
工場では職服を着用しなければならない。
You must wear work clothes in the factory.
彼は職服に着替えて作業を始めた。
He changed into his coveralls and started working.
Compound of 職 (occupation, profession) and 服 (clothing). The exact historical derivation is uncertain, but the word is a straightforward kanji compound meaning 'occupational clothing'.