I live and have a full time job in NJ and receive a W2. I do part time work for a company in PA and receive a 1099-MISC with no withholding. What do I need to do for PA?

[TomD8]

You need to file a non-resident PA return, in addition to your home state NJ return.

PA and NJ have tax reciprocity, but it applies only to W-2 earnings.

Be sure to prepare your non-resident PA return before you do your home state NJ return, so that NJ credits you for the taxes you pay to PA.

https://ttlc.intuit.com/questions/1901271-how-do-i-file-a-nonresident-state-return