The source of trained people from which workers can be hired(noun)
WordNet. Princeton University. 2010.
Use "labor pool" in a sentence
"However, the headwinds are coming from raging inflation, a shrinking labor pool and a weak education system, not from over-construction in infrastructure spending, as Roubini argues."
"He had been at Norfolk Island for a year and Richard knew him slightly; a good-natured, rather shambling Cornishman off Dunkirk hulk and Scarborough, and part of the general labor pool operated by Stephen."