This is the definitive MMT work on employment and the ELR/JG.
Full Employment Abandoned: Shifting Sands and Policy Failures
by William Mitchell & Joan Muysken (Elgar 2008)
The hardbound version is pricey; however, it is available as an ebook for $31.20. Elgar lists a variety of vendors through the link above. Here is the link to Googlebooks.