Btw: as an employee you have a lot of rights to be protected in disputes with your employer even without such an insurance, you might want to contact a union responsible for your line of work for help/information.
I would bet most ex-pats, i.e. most readers of this, are not members of any union, nor would they know where to go?
I'm not in dispute with my employer (of 9 years), but I would like some _independent_ advice on my rights/situation in the case of future events that may transpire. For example, say my employer told me I had to go work in their Frankfurt/Berlin/... office, or else lose my job? (I currently work from home, but my contract say I work in Munich, but our Munich office was closed last year so my employer just told me to work from home. Then my wife got a job in NRW, so we moved, with the full knowledge of my employer). Can I just say "no thanks"?
I don't know who/where is best to ask.
I asked, and paid for, legal advice on the question above last year. Advice was that "we can't advise you until we see the letter you employer might send you explaining their plans, if that scenario pans out". Maybe I was just unlucky, and I should just find a better lawyer? Or maybe there is some place else to go ...