"Real Yields Matter
Paul Krugman comments:
The really striking thing about corporate borrowing rates isn’t that they’re high by historical standards, although they are, but the fact that they’re high even though interest rates on government debt are very, very low. Below I show the spreads on AAA and Baa debt against 30-year Treasuries: they really have spiked.That last sentence is key. Even though Treasury rates have rallied significantly in nominal terms over the past 1 1/2 years, they still yield more in real terms than when the financial crisis began. Corporates, as Paul points out, are the greater issue. Real yields on Investment Grade Corporate Bonds are now 2.5x higher than they were just six months ago.
Also bear in mind the decline in expected inflation: real corporate rates are very high.

Throw in a declining economy and the diminished end-user demand we are witnessing across industries, and it is very easy to see why corporations are having such a difficult time.( I AGREE ) "
And here:
"Spreads: Not Seen Since the Great Depression
JG provided an interesting insight in the comments section of my "Real Yields Matter" post. Credit risk premium, as defined by the difference between the yield of the Moody's Baa and Aaa rated indices (more detail regarding Moody's here), recently moved above 3%. What is the significance?
As of Nov. ‘08, the Baa-Aaa risk premium moved above 3.0%, to 3.07%; in December, it was 3.38%.
When were the last times that the Baa-Aaa risk premium rose above 3.0%? August ‘31, October ‘32, October ‘33, and March ‘38, in the depths of the Lesser Depression (first two) and its protracted recovery (last two).
We are one year into The Greater Depression.

In plotting the data, JG is correct. Although we were awfully close in the early 1980's and 338 bps is a a lot smaller than the 560+ bps we saw in 1932, this does put the current crisis into the correct context.( YES )
Source: St. Louis Fed (BBB) / St. Louis Fed (AAA)"
These are signs of the fear and aversion to risk, which still needs to be attacked with full force. Hence, we need an incentive for investment. It's gotten better, but we're not there yet by any means.