Temporary Work Visa

Non-immigrant visas:

Skilled Workers (H):

An H visa is issued to a nonimmigrant for the purpose of temporary employment in the United States. To qualify for an H visa, the applicant must demonstrate that: 
(a) the prospective employer has filed in the U.S. and the USCIS has approved a petition (Form I-129) requesting H status for the applicant, and 
(b) the applicant qualifies for the specified employment by showing proof of education and relevant work experience.

H-1B

H-1B visa (specialty occupation) is required by an employee in the United States to perform services in a professional job. To qualify, the alien requires a bachelor’s or higher degree (or equivalent) in the specific specialty for which employment authorization is being sought. Before filing the petition with the USCIS, the employer is required to file a labor condition application with the Department of Labor concerning the terms and conditions of the contract of employment.Applicants for H-1B visas are not required to prove that they do not intend to immigrate to the United States. However, you must prove that you are qualified for the visa and that you will be performing the work that USCIS approved as a skilled job.

H-2B

H-2B visa (skilled and unskilled worker) is required by an employee in the United States to perform a job that is temporary or seasonal in nature and for which there is a shortage of U.S. workers. Before filing the petition with the USCIS, the employer is required to obtain from the Department of Labor a labor certification confirming that there are no qualified U.S. workers eligible for the employment on which the petition is based.Applicants for H-2B visas are required to prove that they do not intend to immigrate to the United States.

H-3

H-3 visa (trainee) is required by a trainee who is to receive training from an employer in any field of endeavor, other than graduate education or training. The training cannot be available in the individual’s home country. The employer is required to file a petition, form I-129H, with USCIS.
Applicants for H-3 visas are required to prove that they do not intend to immigrate to the United States.