English-speaking immigration lawyer helping expats navigate visas, residence permits, employment law, and work authorisation — wherever you are in Germany.
Immigration law and employment law — because for expats, the two are inseparable.
Secure online booking via Meetergo · GDPR compliant · Phone or video call
Step through the entire process before you book — so there are no surprises.
Osman Öztas is the founder of leaves and trees. He has specialised in immigration and labour law since 2005 — first at Fragomen, one of the world's largest immigration law firms, then at EY Law (Ernst & Young), and since 2017 as founder of his own practice in Frankfurt.
He advises private individuals, freelancers, companies, foreign consulates, and intergovernmental organisations — entirely in English, German, or Turkish, by phone or video call from anywhere.
A selection of real cases — anonymised. Your situation may look different, but the expertise behind it is the same.
A foreign national was dismissed by their employer. Their residence permit was tied to that employment — deportation proceedings were imminent.
Residence permit successfully extended. Obligation to leave the country averted.
A client's existing residence permit needed to be converted to an EU Blue Card, but special personal circumstances made a standard application impossible.
EU Blue Card successfully obtained, taking all circumstances into account.
A self-employed freelancer needed to secure their own residence permit and bring their family to Germany — while managing the uncertainty of self-employment income.
Residence permit secured for the freelancer and family members.
A client abroad faced complications with their visa application at the German embassy. Communication had broken down and the process stalled.
Mediation between client and German embassy resolved — visa process resumed.
Still unsure? Book a consultation and get a professional assessment of your specific situation.
Book a 10-min call — €89Book directly online — no waiting, no back-and-forth. Secure payment, GDPR compliant.