German court shields whistleblowers in benefits fraud cases despite accused's demands
The Lower Saxony-Bremen State Social Court (Landessozialgericht Niedersachsen-Bremen, LSG) has ruled that a health insurance provider is not obligated to disclose the identity of a whistleblower in a suspected case of social benefits fraud.
The case was brought by a man who was medically certified as unfit for work for eight months in 2018, during which he received sickness benefits totaling around €17,000 from his health insurer. Three years later, the insurer received an anonymous tip alleging that the man had engaged in secondary employment while on sick leave. An inquiry with the Minijob Center confirmed that he had held two part-time jobs in the hospitality sector during that period.
The health insurer initially demanded full repayment of the sickness benefits. During the appeals process, it obtained a statement from the man's general practitioner, who cited severe exhaustion but added that he had no knowledge of his patient's activities outside working hours. The insurer subsequently dropped its repayment claim.
The man then requested disclosure of the whistleblower's identity, intending to pursue civil damages for false accusations and reputational harm. The insurer refused, citing social data protection laws, among other reasons.
The LSG upheld the insurer's legal position, ruling that authorities have discretion in releasing social security data and had exercised it lawfully in this case. The court emphasized the need to balance data protection concerns with the legitimate interest of whistleblowers in remaining anonymous. Exceptions would apply only if there were indications that the tip had been made maliciously—with knowledge of its falsity and intent to damage reputation—or if the insurer had negligently acted on inaccurate information. No such evidence existed here. Instead, the investigation confirmed that the claimant had indeed worked for pay while on sick leave, providing reasonable grounds for the insurer's inquiry.
Lower Saxony-Bremen State Social Court, ruling of March 23, 2026, Case No. L 16 KR 1/26, published at www.juris.de; Lower Court: Hanover Social Court (Sozialgericht Hannover)
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