Here is the (probably) one of the worst payroll system failure: https://en.wikipedia.org/wiki/Phoenix_pay_system https://en.wikipedia.org/wiki/Phoenix_pay_syste

Here is the (probably) one of the worst payroll system failure: https://en.wikipedia.org/wiki/Phoenix_pay_system https://en.wikipedia.org/wiki/Phoenix_pay_system As far as I know, no one was fired. The Phoenix pay system for the government of Canada is a good example of so many failures. People really need to stop thinking that building systems with 10s of thousands of business rules is « easy ».