Insurance premiums for their employees is coming out of their own pockets. What part of that don't you understand?
They don't write a check for the full amount of it, nor do they think of the deduction, just like they don't see the taxes taken out before they get it.
I've said for years (RN days) that the only way you're ever going to see true tax and spending reform is to make people pay their taxes like business does--straight out of their pockets like every other bill or check they write.
Once they see just how much of their money is REALLY going to the government, it'll be incredible.