Simple answer: If your NY employer is not withholding NY tax, you do not (probably) need to file a NY return.
Just don't be surprised if one day you get a notice from the NY tax people asking for money. The NY rule is if you work outside New York for your own convenience, you are subject to New York State income tax on all your NY income.
See <a rel="nofollow" target="_blank" href="
http://www.journalofaccountancy.com/issues/2009/jun/20091371.htm">http://www.journalofaccountancy.co...>
