A “desktop raid” is how the workers’ representative, John M. Grant, vice president of Local 770 of the United Food and Commercial Workers International Union, described the scenario. Overhill, a $200-million-a-year company that provides frozen meals for clients such as American Airlines, Panda Express, Safeway and Jenny Craig, says it had no choice: An Internal Revenue Service audit found that 260 workers had provided “invalid or fraudulent” Social Security numbers. The government took no action against the workers. But Overhill did: All of the employees were fired May 31.  We link to the story