Of course your boss can pick and choose what he will pay for, unless and only to the extent that there is an actual agreement--oral (verbal) or written--setting out *exactly* what he will pay for. There is no requirement whatsoever in the law that a company provide moving expenses; it is completely voluntary if the company does so. Being voluntary, the company can decide what it will pay, how, and when, if it chooses to pay at all. An agreement is enforceable, according to its terms; but if there are no terms about what, when, or how, the company could reasonably use its discretion to pay something which is voluntary to pay in the first place.