noun
sedentary work; desk job
Refers to work done while seated, such as office work or desk-bound tasks. Often contrasted with physical labor.
彼は一日中座業で、腰が痛くなった。
He does sedentary work all day and got back pain.
座業中心の生活は健康に良くない。
A lifestyle centered on sedentary work is not good for your health.
Compound of 座 (seat, sitting) and 業 (work, occupation). The exact historical derivation is uncertain, but the meaning is transparent from the kanji.