I am getting married with an US citizen while on a J1 visa. Can I still work until my work permit expires?

If you have work authorization under your J-1 visa until September 13th, you can continue working on the status until that date regardless of whether you have already filed an I 485 adjustment of status application. Such filing does not invalidate your current nonimmigrant status.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.  

If you are married to a US citizen, any work without authorization will not be held against you (though your employer can get in serious trouble for hiring you without proper authorization).