I've been at U.S. companies that paid lip service to this flexible sort of coverage, but once you are actually useful in the dept you're in, your boss never wan

I've been at U.S. companies that paid lip service to this flexible sort of coverage, but once you are actually useful in the dept you're in, your boss never wants to let you go because upper management didn't build in the redundancy to the headcount to ensure you'd be effectively replaced...