Sick-note fraud at work: how it actually happens — and how to stop it
By PRACPROOF (PTY) LTD · July 2026
Most workplaces treat a medical certificate as self-proving: letterhead, stamp, signature — accepted. That habit is exactly what sick-note fraud exploits. Understanding the three ways fraudulent certificates are produced makes clear why the traditional checks miss them, and what actually works.
Route 1 — The invented certificate
A fully fabricated note: fictional practice, invented doctor, template downloaded or copied from a real certificate. These are the easiest to catch — the practitioner fails an HPCSA register search, the practice number fails a PCNS lookup, the phone number goes nowhere. The catch: someone has to actually run those checks, and in a busy HR office, mostly nobody does.
Route 2 — The altered genuine certificate
The employee really did see a doctor — for one day's illness. The certificate is then edited: the return-to-work date stretched, the duration changed, sometimes just a digit. This is the dangerous category, because every checkable detail is real. The doctor is registered, the practice number is valid, and if you phone, the practice confirms the consultation happened. Only the document itself is dishonest — and no register lookup can see that.
Route 3 — The bought certificate
Certificates issued for a fee without any real consultation, sometimes on genuine stationery. These sit in between: the paperwork can look perfect, and detection usually depends on patterns — the same distant practice appearing across unrelated employees, or certificates that always land on Mondays and Fridays.
Why stamps and letterheads prove nothing
A stamp is stationery. A letterhead is a design. Both are trivially reproduced, and both survive editing — an altered certificate keeps its authentic stamp. Visual inspection catches only the laziest forgeries; checklists of "signs of a fake" help (we publish one), but they are probabilistic, not proof.
The policy that actually works
1. Check the document details as well as the practitioner. A PracProof QR validates its signed summary. Compare the displayed names, dates and summary with the certificate; changes to the paper or PDF alone do not invalidate the QR signature. The check is free and needs no account.
2. Make verification routine, not accusatory. A standing "we verify all certificates" policy removes the awkwardness of singling anyone out — and its deterrent effect does most of the work.
3. Keep independent practitioner and practice checks: HPCSA register, PCNS practice-number lookup, and a phone call to an independently sourced number where needed. A QR does not independently prove identity or that a consultation occurred.
4. Explain the comparison step. A signed summary gives recipients fields to cross-check; it is not automatic approval of the whole certificate. Core PracProof tools are free for founding South African doctors.
Frequently asked
How do fake sick notes usually enter a workplace?
Three main routes: fully fabricated certificates (invented letterheads or stolen doctor details), altered genuine certificates (real consultation, edited dates or duration), and certificates bought from sellers who issue them without any consultation. The second kind is the hardest to catch — every detail on it traces back to a real doctor.
Can an employer reject a suspicious medical certificate?
An employer is entitled to satisfy itself that a certificate is genuine — verifying the practitioner’s registration, the practice number and, where possible, the document itself — and to treat proven forgery as serious misconduct. For a specific dispute, take advice from a labour-law practitioner.
How does a QR check fit into document review?
For PracProof documents, the free QR checker validates a signed summary. Compare its displayed fields with the paper or PDF; a paper edit can leave the QR signature valid. The QR does not independently establish prescriber identity, registration or that a consultation took place. Use independent registration and practice checks where needed, whether or not a QR is present.
General information for South African workplaces and practices — not legal advice. For a specific dispute, consult a labour-law practitioner. © PRACPROOF (PTY) LTD.