How do you resign from a job in Germany?

To resign from a job in Germany, you are legally required to submit a written letter of resignation. In the letter, you must clearly state your last day of employment and adhere to your contractual notice period. It's advisable to deliver the letter in person to Human Resources and get a confirmation of receipt, or send it via registered mail with a return receipt (Einschreiben mit Rückschein) to ensure proof of delivery.