Thank you for your post! This topic is really interesting! Inlanders always have a lot of free time and would like to use this time effectively learning the language, culture and helping people.
The law is not concrete in the specification of volunteer work which does not allow to get some expirience. There is no list of allowed positions and there is no real life examples. So I think inlanders take on their own a risk to be considered as illegally working people.
When we applied for PR, I also started to research volunteer opportunities, but I stopped it after reading the information, presented by eletyl. So I had decided not to take any risks.
Don't you mind me asking how do you get the government internship without PR. Did they ask you about legal documents when you were hired? What were your tasks there?