Can black German workers get identity?

You can't. According to official website of the German Labor Bureau, you can only work with the permission of the German Labor Bureau, otherwise you are an illegal worker, and you can't prove that you are a German worker. Germany will take strict measures against illegal workers and illegal immigrants. If you get an ID card, you can marry a local person, so you can get a green card and your status is legal, or you can go abroad legally and get a legal visa, so you can't get the status of illegal worker in Germany. Germany is located in central Europe, with the largest number of European neighbors. The total economic output ranks fourth in the world and first in Europe. 202 1 year per capita GDP exceeds 50,000 USD.