3 years, given that you have an approved I-140. New employer will need to file a new PERM and I-140. You will be able to retain your old priority date.
Behar Intl. Counsel 619.234.5962 Kindly be advised that the answer above is only general in nature cannot be construed as legal advice, given that not enough facts are known. It is your responsibility to retain a lawyer to analyze the facts specific to your particular situation in order to give you specific advice. Specific answers will require cognizance of all pertinent facts about your case. Any answers offered on Avvo are of a general nature only, and are not meant to create an attorney-client relationship.
Although my colleagues are probably correct, you might get 3 years .... I recommend that you reconsider going with a 'consultancy'.
That is not a 'real' employer/employee relationship. In addition to the fact that immigration is looking very closely at job shops (the main reason that so many people are being 'trapped' in their home countries with 'administrative processing' ... this work is highly dependent on 'client' letters.. In other words ... you could be 'stuck' without work and may need to leave the US.
PROFESSOR OF IMMIGRATION LAW for over 10 years -- firstname.lastname@example.org -- www.capriotti.com -- This blog posting is offered for informational purposes only. It does not constitute an attorney-client relationship. Also, keep in mind that this is an INTERNET BLOG. You should not rely on anything you read here to make decisions which impact on your life. Meet with an attorney, via Skype, or in person, to obtain competent personal and professional guidance.
I concur with Mr. Behar and Professor Franco Capriotti.
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The information contained in this answer is provided for informational purposes only, and should not be construed as legal advice on any subject matter.