If you intend to temporarily live and work in the US, you will need a work visa. There are several categories of temporary work visas:

• (H1-B) visa - Visa designed for persons with special occupations who have higher theoretical and practical knowledge in specialized study fields. This group includes models as well as researchers who work within official state and national projects.
• (H2-A) visa - Visa designed for seasonal agricultural workers which allows American employers to hire foreign workers if domestic aren’t available at the market.
• (H2-B) visa - Visa for seasonal workers who does not work in agriculture.
• (H3) visa - Visa designed for trainees (non medical or academic). These traineeships can be in different professional or industrial areas.
• (L) visa - Visa for transferring within a company. Designed for persons who work in American companies outside of the USA and are coming to the USA regarding work or traineeship.
• (O) visa - Visa designed for persons with exceptional abilities and achievements in the fields of science, art, education, business etc.
• (P) visa - Visa for internationally recognized athletes, artists and entertainers.
• (Q) visa - Visa for cultural exchange visitors.
• (R) visa - Visa for persons engaged in religious activities.

Conditions of Work visa

The basic conditions required for a work visa are:

• For most categories of temporary work visas it is necessary that future employee or their agent submit a petition I-129 to US Citizenship and Immigration Service –USCIS and that petition needs to be approved by this service
• In some cases, before that first step, you will need a certificate or approval from American labor market that you can do certain job in this country for which you have an offer from the employer
• Filled out and approved form DS – 160 – online request for non-immigrant visas (online through embassy website)
• A proof that you intend to stay temporarily in the USA (except for the H1-B visa)
• For every specific category of working visas, specific documents, health insurance or other certificates can be required.