A: If you have an H-1B visa, you are authorized to work only at the institution noted on your I-797. Any substantial changes in the conditions of employment (salary, title, lab, etc.) must be reported to the PIO. If the H-1B employee wishes to take on any additional part-time work, the employer offering the part-time position must file an additional H-1B petition with USCIS and receive an approval notice for the proposed employment before work may commence.