noun
manual work; handwork; manual procedure
Refers to work done by hand rather than by machine, or a process carried out manually. Can be used for physical labor or non-automated tasks.
この工程はすべて手作業で行われている。
This process is done entirely by hand.
手作業でのデータ入力は時
Manual data entry takes time.
人力 means 'human power' and is often used for vehicles or devices powered by people. 手作業 is broader, covering any manual task.
Compound of 手 (hand) and 作業 (work, operation). The reading さぎょう for 作業 is standard.