Yes, let me just make sure I have it.
For Australia, a study found precarious employment could be summarized according to three broad domains: job insecurity, lack of control and working conditions. Those are some factors. In fact, I misled you. I said that they have a definition, but in fact it's a study. That's Australia.
The U.S. also had a study and the two elements that they suggest measuring would be the extent to which work is insecure, uncertain and unstable, and whether workers have opportunities for advancement in their current jobs.