Can I work overseas while having a Green Card without losing it?

There is a good chance that you may have difficulty if you go through with your plan. A permanent resident is supposed to remain in the U. S. for at least half of the time. You may be able to obtain a reentry permit to allow you to remain outside the U. S. for up to but not including 2 years, but a reentry permit is not a guarantee of reentry to the country. In addition, since you are obtaining your green card through marriage, U.S.C.I.S. would expect you to maintain a household with your spouse. Are you planning to have your husband accompany you to New Zealand for the 3 years? If not, there may be suspicion that you do not have a bona fide marriage. Due to the limitations of the Lawyers.com Forums, Alan Lee, Esq.'s (the "Firm") participation in responding to questions posted herein does not constitute legal advice, nor legal representation of the person or entity posting a question. No Attorney/Client relationship is or shall be construed to be created hereby. The information provided herein by the Firm is general, and requires that the poster obtain specific legal advice from an attorney. The poster shall not rely upon the information provided herein as legal advice nor as the basis for making any decisions of legal consequence.