There is no single best work visa. Each of these five categories answers a different question about the worker, the employer or the country. Comparing them by the question they ask is usually more useful than comparing them by prestige.
H-1B: does the job need a degree?
Cap-subject and cap-exempt (H-1B)The H-1B category has an annual limit of 65,000 new visas or statuses per fiscal year, plus 20,000 more for people with a U.S. master's degree or higher. Petitions counted toward that limit are cap-subject. Petitions from higher education institutions, their related or affiliated nonprofits, and nonprofit or governmental research organizations are cap-exempt.See it in the glossary is for specialty occupations that require a bachelor’s degree or equivalent. An employer sponsors, and most new petitions face an annual cap of 85,000 and a selection process. The category permits Dual intentThe principle that some temporary visa holders, such as H-1B and L-1, may pursue permanent residence without jeopardizing their nonimmigrant status.See it in the glossary, meaning a green card process can proceed. See the H-1B overview.
O-1: is the person’s achievement extraordinary?
O-1 is based on sustained acclaim in a field, shown through evidence. It has no annual cap, and an employer or agent files the petition. The standard is high and documented. Compare it with a green card in H-1B versus O-1 pathways.
L-1: is the worker already inside the company?
L-1 transfers an employee from a foreign office of the same organization, generally after a year of employment abroad within the previous three years. L-1A covers managers and executives, and L-1B covers specialized knowledge. There is no lottery. The regulations set qualifying relationships between the entities. See H-1B versus L-1.
E-2: is the investor from a treaty country?
E-2 is available to nationals of countries with a qualifying treaty who make a substantial investment in a real U.S. business. It depends on nationality more than on a degree. Compare it with a transfer route in E-2 versus L-1 new office.
TN: is the worker a Canadian or Mexican professional?
TN is for citizens of Canada and Mexico in listed professions under USMCA, governed by 8 CFR 214.6. It has no cap. Unlike H-1B, TN is generally treated as non-dual-intent, which affects green card plans. Read H-1B versus TN.
Choosing among them
Start with three facts: the person’s nationality, the role and degree, and whether the company already exists abroad. Those often eliminate most options. Costs and timelines vary, so review the sponsoring employer’s obligations too. The broader map is in the temporary work visa comparison.