Where to apply for a Van der Elst visa in Germany:
The issuance of Van der Elst is carried out by the consular department of the German Embassy in Warsaw. It is necessary to apply only in person. Provided that all the documents are in order, obtaining a visa will take only about three weeks. The forms can be taken directly from the consulate or downloaded from the Embassy's website. It is necessary to fill in in German.
Visa "Van der Elst" — work in Germany on a Polish visa
According to the general rules, a business trip can last no more than 3 months in half a year.
If the contract period exceeds the validity period of the Van der Elst visa, it can be extended, but employees of not all companies are allowed to do this. You can extend your visa only after leaving Germany for the host country and apply for a new visa there. After that, you can return to Germany again to continue working
What documents are required to obtain Van der Elst:
A copy of the applicant's contract with the employer;
The applicant's passport, valid for at least 6 months from the submission of the application;
An agreement between the company that hired the applicant for a visa and his client in Germany;
Application from the employer with a description of the goals and terms of the business trip, as well as a list of services provided to the German client;
Employee's medical insurance;
Work permit in the EU country where the employer is located (the validity period is not less than that of the requested visa);
A receipt for the payment of the consular fee of 75 euros (in case of refusal, it will not be refunded);
2 photos of the applicant in biometric format 35X45.
On my side:
Collecting all necessary documents, filling them out and receiving them from the relevant state bodies;
Reservation, submission of documents;
Conducting your case until a positive decision is issued, monitoring, contacting the inspector, reporting documents, etc.