Just a taste from Facing South:
Labor advocates point out that the passage of the EFCA could have a huge impact on improving wages in the South and play a vital role in the region’s economic recovery from the current downturn. Indeed leading economists have explained that pro-worker labor reform should be a key component of any economic recovery program. Employees able to garner better benefits and better wages create a workforce able to move the economy forward — research shows that one of the primary reasons the recession endures is because workers do not have the purchasing power they need to drive the economy.
By all means read the whole thing, and if you do you’ll see that much of it is Walmart specific.