If you believe the AP, labor markets adjust within days of a law being passed and months before it goes into effect

So why are illegals not being hired within just a few days of the new immigration law being passed in Arizona? Even assuming that it isn't stopped by the courts, the law doesn't go into effect for several months. While employers will adjust before the law goes into effect by starting to look for alternative sources of labor, it seems strange that they would stop hiring so quickly. I suspect that there is more than a little hyperbole in this piece.

Many of the cars that once stopped in the Home Depot parking lot to pick up day laborers to hang drywall or do landscaping now just drive on by.

Arizona's sweeping immigration bill allows police to arrest illegal immigrant day laborers seeking work on the street or anyone trying to hire them. It won't take effect until summer but it is already having an effect on the state's underground economy.

"Nobody wants to pick us up," Julio Loyola Diaz says in Spanish as he and dozens of other men wait under the shade of palo verde trees and lean against a low brick wall outside the east Phoenix home improvement store. . . .