
Business investigations: a private investigator for employers, landlords and organisations
Santos Recherchebureau supports employers, landlords, housing corporations and other organisations with targeted business investigations, with sick leave fraud, housing/subletting fraud and surveillance as our core specialisations. Every investigation is carried out by licensed investigators (POB 7635), within the Wpbr and GDPR framework.
Sick leave fraud, housing fraud and surveillance
We've seen a rise in sick leave fraud and housing fraud cases from employers, landlords and housing corporations over the past year — this is where we have the most experience and capacity.
Looking for an investigation for a personal situation, for example infidelity or stalking? See our private investigation services

Sick Leave Fraud Investigation
For employers: clarity when an employee is often off sick and abuse is suspected.
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Housing & Subletting Fraud Investigation
For landlords and housing corporations: the actual occupancy, documented.
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Surveillance & Observation Work
Static and dynamic surveillance by trained, experienced investigators.
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Insurance Fraud & Personal Injury Claim Investigation
Investigating insurance fraud and questionable personal injury or disability claims, for insurers and employers.
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Digital Investigation for Organisations
OSINT and social media research for employers and organisations, lawful and evidence-ready.
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Corporate Fraud Investigation
Protection against financial, administrative or internal fraud within your organisation.
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Non-Compete & Non-Solicitation Investigation
Investigating breach of a non-compete or non-solicitation clause by a former employee.
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Evidence for Lawyers
Support gathering evidence for lawyers and legal proceedings.
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Tailor-Made Investigation
Doesn't your case fit a standard category? We think along in a tailor-made process.
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Mystery & Test Purchases
Objective checks on sales behaviour, compliance and customer experience via a test purchase.
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Pre-Employment Screening
Background screening prior to hiring, conducted discreetly and carefully.
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Camera Vehicles & Mobile Cameras
Our own camera vehicles and camera systems, with AI-assisted and 5G readout.
Learn moreFrequently asked questions
Do you also work with small business owners and homeowners' associations?
Yes, alongside larger organisations and housing corporations, we also support sole traders, small employers and homeowners' associations.
What does a business investigation cost?
This depends heavily on the type and duration of the investigation. After a free intake call, you'll receive a concrete cost estimate.
Is a business investigation discreet towards the employee or tenant?
The investigation is carried out discreetly. Depending on the process and legal requirements, we determine together with you how and when the person involved is informed.
Want to know what we can do for you?
Get in touch, free and without obligation. We respond within 24 hours and think along with you, discreetly.
4.9/5 · 16 reviews on Google · Licensed investigation bureau · POB 7635