If you're a freelancer in Germany, you may have heard of the Künstlersozialkasse (KSK), a social insurance scheme for artists and publicists.
Freelancers are often given the short end of the stick in Germany. Particularly if they're from outside the EU, it can be difficult for freelancers to gain any "typical" social benefits, including access to public insurance or the public pension scheme.
The KSK essentially plays the role of an employer. Once you're a member, the KSK will allow you to be publicly insured and will cover half of your health insurance and pension contributions.