At the beginning of each month, companies report to the federal government their net loss or gain in jobs over the past month.
Given that ...
Companies accurately reported their net loss/gain in jobs over the past month, and the government correctly tallied them up.
How can it be that ...
The number of jobs lost was significantly underestimated in the recent recession?
Evaluate
If all the data coming in is accurate, and all the compilation of that data is done correctly, then how could we have flawed data?
Goal
If none of the info coming in is flawed, and nothing we're doing with that info is flawed, then it seems like the only way for our final tally to be off would be if we're missing data.
Let's look for an answer that suggests we're missing some of the data we need. We know that companies are accurately reporting their gain/loss of jobs, but there must be some part of the story we're missing.