I-140 premium processing is an expedited service offered by the United States Citizenship and Immigration Services (USCIS) for certain employment-based immigrant petitions, specifically the Form I-140, Immigrant Petition for Alien Worker.

Under the premium processing service, foreign nationals can pay an additional fee to have their I-140 petitions processed faster. Typically, regular processing of an I-140 petition can take several months, but with premium processing, the USCIS guarantees a response within 15 business days.

By opting for I-140 premium processing, foreign nationals can receive quicker adjudication of their petition, which can be beneficial in cases where time is of the essence, such as job offers, impending changes in employment or visa status, or priority dates for visa availability.

It's important to note that premium processing only expedites the adjudication of the I-140 petition itself and does not impact the processing time for other related applications or steps in the immigration process, such as adjustment of status or visa issuance.