Right now, most employers take a hands-off approach, their labor contracts simply say the hiring agencies will abide by the law.

NPR: Firm Settles Suit over Undocumented Workers

In the case of Delphi, GM spun off its parts business but made the new company take the old, high cost union contracts--a recipe for disaster.

FORBES: Magazine Article

The capture vessels could take other jobs around the gulf, but on contracts that allowed them to break off immediately in case of emergency.

ECONOMIST: Fixing oil wells