Seems like a weird take on what a salary is to me. I don't know if this is an American thing, and linked to the way your benefits work, like health cover. But I don't see my employer as having any reason to know where I'm located (beyond timezone issues for working hours), or what lifestyle I support with the money they pay me. My salary is based on what price the market will bare for the services I provide, what I do with that money isn't really any of their business.