Premium Processing Service refers to an optional premium service offered by the United States Citizenship and Immigration Services to employers filing Form I-129 (Petition for a Nonimmigrant Worker) or Form I-140 (Immigrant Petition for Alien Worker). To avail of the service, the employer needs to file Form I-907 and include a fee that (as of 2021) is $1,500 for the H-2B and R classifications and $2,500 for all others.