- very highly qualified workers
- skilled workers in shortage occupations
- other key workers
- graduates of Austrian universities and colleges of higher education
- self-employed key workers
"Key workers" is a common term referring to people who (usually) work for the government in essential areas such as postal delivery, medical personnel, traffic officers, and so on.
Oh, and the Austrian unemployment rate was at 4.3% in January of this year, about half of the US 8.2% unemployment rate.
If the "graduates of Austrian universities" category attracts you, be aware that the University of Vienna charges non-EU students a whopping €416 a semester.
Yes, you read that right. Here in Europe, government generally recognize that education is important, so it's strongly supported by the governments (except for the UK). I've also written about how you, as a foreigner, can study in Germany or Norway without paying tuition. It's not a trick; it's how governments work over here.