RESIDENCE ACT

§ 52 Revocation

(1) Save in the cases covered by sub-sections 4 paragraph 1, sentence 2 number 2a , a foreigner’s residence title can only be revoked if … he or she no longer possesses a valid passport or passport substitute, …

(2) A visa, a residence permit an an EU Blue Card, which have been granted for the purpose of employment shall be revoked if the Federal Employment Agency revokes the approval of employment pursuant to Section 41. In the case of sentence 1, a visa and a residence permit which have not been granted for the purpose of employment shall be revoked to the extent to which they permit the employment concerned.