work clothes; workwear; boilersuit; overalls
General term for clothing worn for manual labor, factory work, or other physical tasks. Can refer to coveralls, uniforms, or durable work garments.
Wearing work clothes is mandatory in the factory.
新しい作業服は動きやすくて気に入っている。
I like the new workwear because it's easy to move in.
つなぎ is a one-piece coverall or jumpsuit, often a type of 作業服, but 作業服 can also include separate tops and bottoms.
Compound of 作業 (work, operation) and 服 (clothes).