Working visas can take various forms, but in general they are non-immigrant visas that allow a foreign national to work in the U.S. for a specific amount of time.
In some cases, your employer applies for the visa in the U.S., and then you apply at the U.S. consulate abroad. In other cases you apply directly to the consulate. Specific visas require specific documentation. An experienced immigration lawyer can help you with all the requirements for a working visa.
The U.S. state department lists the wait times for non-immigrant visas on its website at: travel.state.gov/visa/temp/wait/wait_4638.html
The rules vary depending on the type of non-immigrant visa, but in general spouses and children of a family member with a non-immigrant visa are allowed to study, but not work, while in the U.S.
If you need legal help with your immigration case, or if you know someone who does, please contact us to set up an initial consultation.