Queensland Health payroll system failure
Tens of thousands of Queensland Health staff were overpaid, underpaid, or not paid at all after go-live; the eventual cost to fix and support the system exceeded AU$1.2 billion, against an original budget of about AU$6 million.
The damage was public. The root cause was preventable.
Tens of thousands of Queensland Health staff were overpaid, underpaid, or not paid at all after go-live; the eventual cost to fix and support the system exceeded AU$1.2 billion, against an original budget of about AU$6 million.
What the software actually got wrong
The new SAP-based payroll system was rushed live without adequate testing, training, or business-process alignment, so it could not correctly process the many complex award and shift-pay rules of the health workforce.
The new SAP-based payroll system was rushed live without...
The new SAP-based payroll system was rushed live without adequate testing, training, or business-process alignment, so it could not correctly process the many complex award and shift-pay rules of the health workforce.
Requs AI Edge Case flags this exact pattern at the requirements and architecture stage — before a single line of code implementing it exists — so the assumption behind it gets challenged while it is still cheap to fix.
Beyond code coverage and "shall" testing
Root causes like this one rarely show up in code coverage or requirements-compliance testing, because nobody wrote a requirement anticipating the specific edge case that broke. Requs AI Edge Case and Requs AI Software FMEA are built to surface exactly this class of overlooked failure mode — before the software is written.
Surfaces this before code exists
Identifies edge cases like this one at requirements and architecture time, using the Common Defect Enumeration to catalog failure patterns seen across hundreds of real-world software failures — including this one.
Connects the failure mode to the hazard
Traces this class of root cause directly to the system-level hazard it can produce, so a defect pattern like this one gets flagged during design review instead of after it ships.
Find the overlooked root causes before they ship.
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