Short Answer

Section 623 of the German Civil Code strictly invalidates any resignation submitted via email, digital text, or electronic messaging systems.

Your employment contract remains fully active and legally binding until your boss receives a physical document featuring your original signature.

What Most Expats Don't Realize

You sent a detailed resignation email to your manager on the 15th of the month, assuming your two-week notice period would allow you to leave by the 30th. On your planned final day, HR informed you that your email had zero legal validity and demanded you remain at the company for another entire month. You missed the official start date at your next company, resulting in a formal breach of contract fine that cost you €2,800.

What To Do

  • Print your formal resignation letter onto a physical sheet of paper using standard formatting.
  • Sign the bottom of the physical page using a blue or black wet-ink pen to validate your signature.
  • "Hiermit kündige ich mein Arbeitsverhältnis ordnungsgemäß und fristgerecht zum nächstmöglichen Zeitpunkt." (I herewith terminate my employment relationship properly and in due time at the earliest possible date.) — hand this document directly to your HR manager or send it via registered mail.