If I may verify the processing times involved in NIW. Since it falls under EB2 category, I am assuming it may be a long time before I can get my EAD card and be able to change employers. Also, I want to confirm if there could be issues if I change employers during the process - If so, I'd prefer to change my current employer before starting with it.
You can change employers any time if you are a self-applicant and will continue to work in your stated area of national interest. But NIW priority date will take the same time as a normal EB-2 application does. See:
Note: This is a verbatim transcript of the referenced audio/video media delivered as oral communication, and, therefore, may not conform to written grammatical or syntactical form.
We won both an EB1 Alien of Extraordinary Ability case and a National Interest Waiver for this applicant. He was noted as being an exceptionally qualified, brilliant and outstanding researcher amongst an international peer group. We provided copies of his substantial publication record as well as evidence of his numerous "invited" presentations. This applicant had patented material which was identified as innovative and pioneering in the field and admired by top researchers.