the.com/labour

means Physical or mental effort put toward producing something — especially work done for wages rather than for love of it.

from From Old French labour, from Latin labor meaning toil, hardship, or exertion — itself possibly tied to a root suggesting staggering or being weighed down under a burden. The word has long carried that double sense: labor as the work itself, and labor as the suffering it costs you, which is why childbirth borrowed the same term.