Petition for Skilled Worker and Specialty Occupation Visa H1B Petition The "Petition for Specialty Occupation Visa" generally refers to the H-1B visa petition in the United States. The H-1B visa is a non-immigrant visa category that allows U.S. employers to hire foreign workers in specialty occupations that require specialized knowledge and skills. The employer must file a Form I-129 petition with U.S. Citizenship and Immigration Services (USCIS), demonstrating that the position meets the criteria of a specialty occupation and that the beneficiary (the foreign worker) has the necessary qualifications. If approved, the beneficiary can work in the U.S. for the sponsoring employer for a specified period, typically up to three years with the possibility of extension