I have a German BlueCard (for the last 2 months) which I got at city X, which is one of my company's several locations. Now my company HQ is in city Y (both X and Y are inside Germany, different states) - will this affect my German BlueCard? The job, position, salary remain exactly same with no changes whatsoever.
Update 2021: The other answer is not correct, even changing job location requires a re-permission and form fill-up from the Job Authority and re-verification.
It is easy to prove, let us have a look in the documentation that you had to fill for Blue Card:
Now let us jump to section 5:
5. Work location
- Employee is employed in ____________________________.
- Employee is employed at alternating work/employment locations
Unless you employer had selected the second option,
Employee is employed at alternating work/employment locations during your initial Blue Card application, you need to ask for permission for an location change. If your employer did select second option - yay!
Future readers, please verify any change by writing to the immigration office. Laws and requirements can change any day!
Do not rely on this answer!