An employer who wishes to terminate an employee's contract within the specified period should, in Germany, avoid sending the termination by registered mail with return receipt requested. If the employee does not collect the registered letter from the post office, it is considered not to have been delivered. The Federal Labor Court has now decided (judgment of January 30, 2025, 2 AZR 68/24) that even a registered letter with return receipt is not sufficient proof of delivery, even though the transmission status on the Internet certifies that it was placed in the mailbox.

It is therefore advisable for every employer to arrange for delivery by a courier, who should also create a corresponding report.