Please , if you are planning to sponsor someone on a chef visa. Here is some information about chef visa.
CHEFS
The USCIS is inconsistent in classifying chef and hospitality management positions and workers as specialist or professional. Some H1B visas are approved for foreign nationals to work in large restaurants and hotels that would be denied for their counterparts in smaller establishments.
For example, an H-1B visa may be approved for a chef to work at a five-star restaurant but not for an upcoming restaurant with a two star rating. As a result, these professionals often must use B-1, E-2, H-2B, H-3, J-1, L-1, O-1, Q-1, or TN visas or permanent resident status to work in the U.S.
Chefs and hospitality management professionals can, depending on the specific facts, use almost all of the nonimmigrant work visas. This distinguishes these occupations from others that are more limited to specific visa categories
Chefs and Cooks
H-1B visa: Chefs who start their own restaurants are often eligible for E-2 status as principal investors.
H-2B visa: Chefs may qualify for temporary positions during a busy season--for example, the employer is a ski resort and the position is for the winter season. Once the employer proves the position is temporary or seasonal the employer will be barred from sponsoring the foreign national for a permanent labor certification for that position.
J-1 visa: A young cook seeking exposure to how a restaurant operates in the U.S. may obtain a J-1 industrial trainee visa for up to 18 months. Many organizations have J-1 programs specifically accredited for training in the culinary arts.
L-1 visa:Chefs with management responsibilities employed by multinational companies should be eligible for L-1A visas. It is also possible that a specialized knowledge chef or cook could obtain an L-1B visa. For example, an international airline catering company may have unique processes, technologies, and procedures for preparing their food and delivering it to airplanes such that an employee with specialized knowledge is necessary.
O-1 visa: O-1 visas are available for chefs of extraordinary ability. Extensive evidence is required to show that the chef is a culinary artist of 'distinction' who is 'renowned, leading, or well-known' in the field.
TN visa: Chefs are not included in the NAFTA Schedule of Professionals. Some chefs, however, may work from time to time as management consultants to advise on the design, building, opening, and advertising of new restaurants, as well as the menu planning. In this situation, a management consultant TN visa may be granted to a Canadian or Mexican chef.