Yeah, that's the thing. It's really casual, and I'm talking here fitting around your timetable and only when work opportunities come up. So it's not even on a weekly basis (well, it is, but my timetable never fits so I never get to work weekly), and we only get paid fortnightly. But when we are needed, we are really needed, so we get paid a lot.
I guess it evens out, and I don't really need the money, but it's good for long term savings, which is where all my money is going to. Don't worry, I'm trying to find another job which is more regular, but the hourly difference would be so great that I'm claiming tax free threshold for this current first job.