noun
work party; work crew; task force
A group of people organized to carry out a specific job or project, often in a workplace, volunteer, or military context.
明日の清掃のために作業班を編成した。
We formed a work party for tomorrow's cleanup.
作業班は朝から現場で作業を始めた。
The work crew started working at the site in the morning.
班 is a broader term for a squad or group, not necessarily work-oriented; 作業班 explicitly adds the work context.
Compound of 作業 (work, operation) and 班 (group, squad).