Christoph Heidelberg

Specialist Attorney for Construction and Architectural Law, Specialist Attorney for Employment Law

"Mere approximate knowledge is nowhere more dangerous than in law." (Gustav Radbruch)

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News from Our Firm

When the Doctor Certifies Sick Leave – but Is Not a Reliable Witness

28.1.2026

7:45

When the Doctor Certifies Sick Leave – but Is Not a Reliable Witness

Certificates of incapacity for work are considered a central piece of evidence in labour law. A recent ruling by the Düsseldorf Regional Labour Court, however, demonstrates that if the evidential value of such a certificate is undermined, the certificate alone is no longer sufficient—even if the treating physician testifies in court. This is particularly relevant in the context of dismissals, where the requirements for full proof of incapacity for work are becoming increasingly precise. This article outlines what courts focus on, highlights common weaknesses, and explains the practical significance of a physician’s testimony.

🎄 Ein schöner Jahresabschluss mit unserem Team ✨

23.12.2025

12:00

🎄 Ein schöner Jahresabschluss mit unserem Team ✨

Unsere Weihnachtsfeier im Winterdorf am Lister Turm bot gutes Essen, entspannte Stimmung und starkes Teamgefühl – ein gelungener Jahresabschluss.

Successful Restart of the EZM Group – Supported by activelaw and AURICON

5.12.2025

11:00

Successful Restart of the EZM Group – Supported by activelaw and AURICON

The EZM Group has successfully relaunched following insolvency: thanks to Calfin, as well as the support provided by activelaw and AURICON, locations and jobs have been secured.

The State Is Paying Attention - New Reporting Obligations for Crypto Service Providers

11.11.2025

8:00

The State Is Paying Attention - New Reporting Obligations for Crypto Service Providers

By the end of 2025, the Crypto Asset Tax Transparency Act is expected to enter into force. It will require crypto service providers to report user and transaction data to the Federal Central Tax Office (BZSt). North Rhine Westphalia is already conducting investigations in thousands of cases.

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