Jared Bernstein wrote a post about QE and Inequality. My view on his post is...
"As I and Brad DeLong say, inequality and record profits are mostly caused by the unusual drop in labor share since the turn of the century.
Yet, one problem with QE and easy money is that the weaker firms are coddled and protected, which keeps the economy from rising to a stronger level. Weak firms are resistant to raising wages. They are less productive. More productive firms have a disadvantage in replacing less productive ones in this easy money environment. Ultimately, workers suffer in a less productive economy.
The drop in labor share tightens the effective demand limit upon utilization of labor and capital. The Fed is not guilty for the drop in labor share. But the drop in labor share is partly due to less productive firms being protected by easy money, QE.
So QE can create jobs and such, but the quality of those jobs is ultimately weak."