The O-2 visa is a non-immigrant working visa that is granted to the essential support personnel of holders of O-1 visas in certain fields. The visa allows its holder to accompany the O-1 visa holder to the US and perform his duties there (an actor’s agent, for example). The O-2 visa holder’s family may apply for O-3 visas so that they can accompany him.
To qualify for an O-2 visa, your duties must be an integral part of the activities of the O-1 visa holder, and you must have a longstanding pre-existing professional relationship with the holder. Your duties must be of a specific rather than a general nature, they must require you to possess and utilize critical skills and experience, and they must not be possessed by a US worker.
O-2 visas are offered only to support personnel for O-1 visas holders in the fields of athletics, entertainment, motion picture, and television production. They are not granted to support personnel of holders of O-1 visas that were granted on the basis of participation in scientific, business or educational fields — a scientific research assistant would probably be ineligible, for example.

Athletics Support Staff
You cannot work for anyone else while you are in the US unless the other employer separately petitions the USCIS, and your family members may not work while they are present in the US.
The permitted period of stay of an O-2 visa holder is often coextensive with the duration of the O-1 visa holder’s status, including an indefinite number of one-year extensions. If your services are not necessary for the O-1 visa holder’s entire duration of stay, however, your period of stay will be limited to the time period during which your services are actually needed.
As is the case with the O-1 visa holder, you can be admitted to the US up to 10 days before your visa validity period begins, and you may delay your departure for up to 10 days after your visa validity period ends. The O-2 visa is a multiple re-entry visa, meaning that you can travel to and from the US as many times as you like during the visa validity period.
The application process involves four steps:
If you are terminated or laid off while in the US, your employer must pay for your return transportation to your last place of residence abroad. This liability does not apply if you quit your job voluntarily.

Airplane – Return Transportation
The O-2 visa is a non-immigrant working visa that is granted to the essential support personnel of holders of O-1 visas in certain fields. The visa allows its holder to accompany the O-1 visa holder to the US and perform his duties there (an actor’s agent, for example). The O-2 visa holder’s family may apply for O-3 visas so that they can accompany him.