noun
outside work; outdoor work
Refers to work done outside, such as construction, farming, or fieldwork, as opposed to indoor or desk work.
父は出仕事で日焼けしている。
My father is suntanned from working outside.
今日は出仕事が多くて疲れた。
I had a lot of outdoor work today and I'm tired.
屋外作業 is a more formal term for 'outdoor work', whereas 出仕事 is a common, everyday word.
Compound of 出 (で, 'out') and 仕事 (しごと, 'work'). The exact historical derivation is uncertain, but the meaning is transparent from its components.