There is a petition ongoing for Germany so that working on open source projects is recognized as volunteer work.
Context:
Anyone who writes, maintains and translates software is officially doing this as a hobby in Germany. In terms of tax and funding law, working on open source projects does not count as volunteering, unlike working in a sports club, in youth work or in the rescue service.
More information (German):
Linuxundich
Please sign if you agree with that.
Link to the petition