The Likeable Fraudster is a time bomb. There will be something in their past that is detonated by a personal crisis that will spur them to take a ‘loan’ from the organisation. Proceeds will be put toward the crisis and then further loans are taken to generate money to repay the loan, usually through gambling. Co-workers are devastated when the fraud is discovered, and leave due to their broken trust.
When they are discovered, they hand themselves in with all the evidence that they can. They are so mortified at their behaviour that many try to commit suicide. This a real risk, and there is a duty of care to the employee in these circumstances, so if in jail they need to be on suicide watch.