If those limits are not raised but union contracts push wages up, waste companies may be caught in a squeeze.
At the same time, faced with rising social tensions, the Communist leadership is now taking steps to strengthen labour laws - again, pushing wages up.
The central bank has been on the alert for signs that the good times are pushing wages up faster.
With all the money flying about, the unions'll push wages through the roof.
Unemployment, already a low 3.5 percent, is expected to fall further, pushing South Korean wages in the direction of Japan's.
In a free market, such shortages are supposed to push wages high enough to lure departed workers.
As multinational corporations move in, increased demand for labor will push wages up.
But it also helped push Spanish wages up to uncompetitive levels.
At the top of his list was declining unemployment, which he said would eventually push wages and perhaps prices higher in an inflationary spiral.
Furthermore, the initial dearth in available labor pushes wages up, making migration even more enticing.