Registered mail with return receipt is no longer sufficient: What the Federal Labor Court ruling means for employers of international skilled workers

For decades, registered mail with return receipt was considered the pragmatic standard in German HR departments: inexpensive, fast, and in case of dispute, proof of delivery from Deutsche Post was included in the file. With its ruling of May 7, 2026 (Case No. 2 AZR 184/25), the Federal Labor Court undermined this trust. For companies employing international specialists , this is more than just a minor detail in labor law. Those who cannot prove receipt of a notice of termination not only face problems in labor court but also find themselves in a difficult position with immigration authorities . We show what has changed and how HR departments can now proceed in a legally compliant manner.

What did the Federal Labour Court decide?

A notice of termination is a declaration of intent that requires receipt. It only becomes effective the moment it is received by the employee (§ 130 para. 1 of the German Civil Code). In case of dispute, the employer must prove receipt. Until now, a so-called prima facie case helped in this regard: If the employer could present the mailing and delivery receipts for registered mail, according to the previous rulings of many courts, there was a strong presumption that the letter had actually been delivered.

The Federal Labor Court (BAG) now takes a different view. With today's digital scanning process, the delivery person generates the delivery receipt before depositing the item. The receipt therefore only documents that the delivery person was in front of the correct mailbox, not that the item was actually deposited. A typical sequence of events upon which a prima facie case could be based no longer exists. If the employee disputes receipt, the employer bears the full burden of proof, and registered mail with delivery confirmation no longer helps them in this regard. This applies to all declarations requiring receipt in the employment relationship, including not only notices of termination but also warnings, invitations to company reintegration management pursuant to Section 167 Paragraph 2 of the German Social Code, Book IX (SGB IX), and amendments to the employment contract .

Why does the ruling hit employers of foreign skilled workers particularly hard?

In our daily work with companies that bring skilled workers from the USA , Great Britain , or Canada to Germany, we repeatedly see the same situation: Especially in the first few months, immigrant employees live in furnished temporary apartments, serviced apartments, or shared rooms. Their name is often missing or only temporarily displayed on the mailbox, the address changes after a few months, and their personnel file still contains their original address. In addition, many international employees spend their holidays with family in their home country and don't check their mail for weeks.

Generally, a letter is considered delivered even if it is placed in the mailbox during an employee's absence. However, this only benefits the employer if they can prove delivery, and this is precisely the weak point. If proof is only provided later or not at all, the termination of the employment relationship is postponed, and the employer may still owe wages due to default of acceptance (§ 615 German Civil Code). Dismissals shortly before the end of the six-month waiting period under § 1 para. 1 of the German Protection Against Unfair Dismissal Act (KSchG) or during the probationary period with the shortened notice period of § 622 para. 3 of the German Civil Code (BGB) are particularly problematic: In these cases, a single day often determines whether or not protection against unfair dismissal applies.

What are the immigration-related consequences of unclear access?

Employers who hire foreign nationals with a residence permit are obligated under Section 4a Paragraph 5 Sentence 3 Number 3 of the German Residence Act (AufenthG) to notify the relevant immigration authority within four weeks if the employment is terminated prematurely. Failure to comply can be punished as an administrative offense under Section 98 of the Residence Act with a fine. This deadline is linked to the actual termination date, which in turn depends on the receipt of the notice of termination.

If access to the residence permit is disputed, a contradictory situation arises: The employer reports the termination, the immigration authorities then examine whether to retroactively shorten the residence permit under Section 7 Paragraph 2 Sentence 2 of the German Residence Act (AufenthG), and months later the court determines that the employment relationship continued due to a lack of verifiable access. In practice, we observe that the Berlin State Office for Immigration responds quickly to such notifications with letters requesting a hearing, even while the labor court proceedings are still ongoing. For the affected employee, who may have moved to Germany with their family , this means considerable uncertainty, and for the company, an avoidable reputational risk. The same applies to holders of the EU Blue Card : Job loss does not automatically terminate their residence permit, but any ambiguity regarding the termination date complicates planning for subsequent employment and communication with authorities.

Which delivery routes are still safe?

The most reliable method is personal delivery at the workplace in the presence of a witness who knows the contents of the letter and confirms the delivery in writing. If this is not possible, it is advisable to use a designated messenger: This person reads the termination letter, puts it in the envelope, mails it, and documents the date, time, and mailbox label in a log, ideally with a photo. The most formally secure method remains service by a bailiff pursuant to Section 132 Paragraph 1 of the German Civil Code (BGB) in conjunction with the service regulations of the German Code of Civil Procedure (ZPO), which concludes with a certificate of service pursuant to Section 182 ZPO. However, this method takes time, which may be in short supply in the case of terminations subject to a notice period.

Caution is advised when using registered mail with return receipt, which is often recommended. If the delivery person doesn't find the recipient at home, they will only leave a notification card. The letter is then only considered delivered upon collection, and if the recipient doesn't collect it, delivery is not considered complete. Especially for time-sensitive notices of termination, registered mail with return receipt is therefore often the riskiest option.

Another practical point concerns language. According to Section 623 of the German Civil Code (BGB), the notice of termination must be in writing with an original signature; an email or a PDF is not sufficient. A letter in German is also valid for use with an English-speaking employee. However, including an English translation as a service can prevent many later disputes about whether the recipient was able to understand the content.

What specific actions should HR departments take now?

Many companies initially react to rulings like this one by waiting or resorting to templates from the internet. Both are risky, as these standard templates fail to consider the living situation of international employees or their residency registration obligations. It is advisable to include a clause in the employment contract requiring immediate notification of address changes and to regularly verify the address against the registration certificate. Before any termination, a delivery schedule with sufficient time buffer should be in place, and the notification to the immigration authorities should be prepared concurrently to ensure the termination date is clearly documented.

We support employers precisely at this intersection of labor law and immigration law. From hundreds of cases involving international employees, we know where HR departments typically stumble and how authorities react to unclear situations. Whether it's a planned separation, a disputed delivery of documents, or an existing hearing with the immigration authorities : the earlier we are involved, the more room for maneuver remains.

Conclusion

The Federal Labor Court's ruling of May 7, 2026, ends the era of registered mail with return receipt as a reliable proof of delivery. Those who continue to rely on it risk that even a justified dismissal will fail due to delivery issues. For employers of international skilled workers, a second layer of complexity comes into play: the termination date determines reporting obligations to the immigration authorities and the employee's future residency status. Personal delivery with witnesses, a dedicated courier with a written record, or a bailiff are now standard practice. If you are planning to terminate the employment of a foreign skilled worker or are already involved in a dispute over service of process, contact us as soon as possible.