I always felt kind of sorry for the fraud investigators that they had to bring in to the place where I worked. Even though they were there to help with preventing fraud, rather than discovering it, people just didn't treat them very well.
I guess they knew that it was going to end up giving us even more paperwork, and it felt like the business didn't trust us on top of that.
But, the poor guys were only doing their job. I suppose they chose to go into that kind of job, so I shouldn't worry too much about it.