Job in a related field

As you found out, a blue card requires a in in your field. There is of course the question what the individual processing officer would consider "in" and "out of" your field,which we cannot answer here.
But you can always apply for a normal work permit instead of a blue card, so as far as I know the restrictions do not apply.

beppi wrote:

As you found out, a blue card requires a in in your field. There is of course the question what the individual processing officer would consider "in" and "out of" your field,which we cannot answer here.
But you can always apply for a normal work permit instead of a blue card, so as far as I know the restrictions do not apply.

Well, to get a blue cared has extra qualifications that a normal work visa doesn't. But I understand that the limitations for a job in one's field of study in connection with the 18 months allowance still apply. I think they are usually pretty lax in their interpretation but nobody can say for sure how a specific decision will turn out. One must understand the underlying theory is that special conditions are being given to attract qualified, skilled, educated people. If one gets a university degree and then can't find a job other than being a garbageman or stocking shelves in a supermarket then it simply doesn't fit.

And the biggest risk is likely for people who do a English taught program without parallel learning fluent German. Their academic credentials might not bring much if the job market doesn't include jobs they can handles due to a lack of language skills. Some such people might look for much lower level jobs in desperation to pay the bills and to attempt to stay in Germany. It's imperative one learns the language unless they are certain that will still be able to find a job, something that does exist in some niches like IT.