Amongst other things, Gregory teaches at the University of Technology, Sydney. He spent a number of years in the United States where he completed his MEd (Kent State University) and PhD (UCLA) before returning home to Australia. Prior to that, he was part of a whole generation of unemployed youth before graduating to work in various employment and training programmes. He is a member of the National Tertiary Education Union and the Socialist Alliance (Australia). He enjoys listening to folk, ska, old skool punk and electronic music and is also known to occasionally hack out some tunes on his guitar such as "There is Power in the Union" and "To Have and to Have Not" (basically because these are the only two songs he knows).