(Ours is around 17/18, depends on the union. And I mainly do it to keep myself busy. It's not like I have to, I just earn a little bit of extra on the side. I'd otherwise get about 1000 usd's to live on per month, which is manageable, and with this it's just another 150 or so. Currently it's only 10 hours a week, but after New Year's that'll double.)