11 years MSFT here
and it's really not that bad. I mean, any filing of expenses is a PITA, mainly due to having to find your receipts and work out what was for what - but the current system works, there's an app that improves on the old webinterface of //msexpense2 and there's no actual paperwork needed any more, it's all done on photos of receipts etc.
Biting the hand that feeds IT
