巨长，大意是说可以，而且甚至可以有时没工作．
LINK在此:http://3law.com/ti/faq/q25.htm
Independent petitioners in NIW or EB-1A:
Independent petitioners in NIW or EB-1A enjoy, in addition to the above 180 day rule, a much broader flexibility due to the different nature of their petitions. In general, an independent petitioner has a much better chance to be able to change job without affecting an ongoing I-485. In most cases, an independent petitioner's status will be unaffected during pending I-485, regardless of which employer you work for during the time, or even if employed at all. Indeed, it is not very common that a NIW or EB-1A petitioner fails to qualify for I-485 only as a result of his employment status after I-140 approval.