What is the I-129S?

The I-129S is the form used within the blanket L petition (known as the Blanket L), a pathway that streamlines the transfer of employees within multinational companies that already have an approved blanket petition with USCIS.

In practice, it functions as the piece of paperwork that individualizes the beneficiary: while the blanket petition approves the company and its corporate structure broadly, the I-129S names a specific employee and describes their role, their background, and how their experience fits within the managerial, executive, or specialized knowledge functions of the L-1 visa.

With the endorsed I-129S in hand, the worker typically presents the form directly at the consulate (or at the port of entry, as applicable) to obtain the L-1 visa under the blanket petition, without needing a full individual petition for each transfer.

Since accurate completion is critical and details can change, it is worth reviewing the official USCIS instructions and, when possible, relying on employer support and an immigration professional when preparing the I-129S.

About the author

Victoria Harper

Editor-in-Chief

Meet the author

As a journalist and lead editor at Visto n’ Visa, Victoria helps ensure that immigration topics are covered in a clear, trustworthy, and easy-to-understand way. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.