I recently joined a Google+ community on this very topic. The founder of the community page, Paul Walsh, wrote this about his and Nicola Prentis’ rejected proposal to set up a Teachers as Workers IATEFL SIG. One thing he said particularly resonated with me:
A lot of us are fully-paid up members of The Precariat, a term first coined in a book by Guy Standing in 2011 to describe a new class that has little social protection, low or unsecured wages and no trade union representation. This precarious work leads to precarious life, with individuals unable to form stable occupational identities.