The title is a bit misleading. While it is true that Norwegian PhD students don't have to pay tuition, they're also salaried employees of the university. My PhD

The title is a bit misleading. While it is true that Norwegian PhD students don't have to pay tuition, they're also salaried employees of the university. My PhD position pays at the lower end of what an engineer can expect to be paid in the public sector (and certainly lower than private sector), but it's still more than enough to live comfortably off: my salary is about 400k NOK (~66k USD, according to Google).