means The total body of people available for or engaged in work, whether in a company, an industry, or a whole nation.

from A straightforward English compound of "work" and "force." "Work" is ancient, descending from Old English "weorc" (rooted in Proto-Germanic and ultimately a Proto-Indo-European base also tied to Greek "ergon," deed or task). "Force" arrived via Old French from Latin "fortis," strong. Stitched together, the word treats human labor like a military or physical quantity — a measurable mass of muscle and hours — and the pairing emerged with the rise of industrial and economic accounting, when populations of laborers began to be counted and managed as a single deployable resource.