What is meant by "extension of stay"?

The term "extension of stay" refers to the process through which a nonimmigrant in the United States applies to increase the duration of their authorized stay beyond the original time granted upon admission. This is applicable to various visa types, allowing individuals who may need more time for a legitimate purpose, such as studies, work, or other activities, to remain in the country legally without having to leave and reapply for a new visa.

This process is crucial for nonimmigrants who encounter unforeseen circumstances that require them to stay longer than initially planned. For example, a student who needs additional time to complete their education or a temporary worker who has ongoing projects may need to file for an extension to continue their activities legally in the U.S.

While changing immigration status and applying for permanent residence are important processes in their own right, they do not pertain specifically to extending the duration of a nonimmigrant's stay. Similarly, the ability to work while on a visa is a separate issue related to the conditions set by the specific visa type and does not directly involve the extension of the period of authorized stay.