Generalisation perhaps, but at the bank reluctance to take holiday was an Amber flag for possible internal fraud. I'd imagine it'd be likewise for some other roles in other industries too.
Essentially what Brookly_Bay said, to keep fraud undiscovered often takes the perpetrator to have a level of control over an organisational system or process to allow them to cover their tracks. Going away on holiday for a while opens up those aspects to scrutiny.
Generalisation perhaps, but at the bank reluctance to take holiday was an Amber flag for possible internal fraud. I'd imagine it'd be likewise for some other roles in other industries too.