An increasing pool of workers is critical to economic growth.
But its pool of workers is not that deep.
Employers in some sectors quickly took advantage of this newly cheap pool of workers.
Union bosses are competing for a shrinking pool of workers willing to pay subscription fees.
Germany's social insurance programs face an ever-shrinking pool of workers subsidizing retirees' benefits.
Faced with a new, different pool of workers, companies often invest to reap the higher profits that the labor allows.
That, they say, would leave employers to cover an older and sicker pool of workers, forcing up premiums.
For decades, many labor economists said that China's vast population would supply a nearly bottomless pool of workers.
As a consequence, China's potential pool of workers for the manufacturing sector is not growing any more," the report said.
Lengthening life expectancy and slumping fertility rates are leaving a shrinking pool of workers to pay the costs of pensions and healthcare for rapidly greying populations.
But certain kinds of products require certain kinds of training and education and you have a more skilled pool of workers in New York than anywhere else".
