Last reviewed September 2026
Overview: H-2B covers a genuinely temporary seasonal, peak-load, or one-time labor need and is limited by a statutory cap that regularly fills each half of the fiscal year. TN status has no cap at all and can be renewed indefinitely for a Canadian or Mexican professional in a listed occupation, but only covers roles that fit the fixed USMCA occupation list. An employer with a recurring staffing need has to match the actual pattern of that need to whichever category's underlying standard it fits.
H-2B's seasonal, cap-limited structure
H-2B requires the employer to demonstrate the need is temporary under one of four recognized categories, seasonal, peak-load, intermittent, or one-time occurrence, through a full Temporary Labor Certification process with the Department of Labor. The statutory cap of 66,000 per fiscal year, split into two half-year allocations, regularly fills, and supplemental allocations beyond the cap depend on time-limited congressional authority that is not guaranteed from year to year.
TN's occupation-list, no-cap structure
TN has no annual numerical limit and no lottery. Canadian citizens generally apply directly at a port of entry; Mexican citizens generally go through consular processing. TN is granted in increments of up to three years and can be renewed indefinitely as long as the role continues to match a listed USMCA occupation and the stay remains genuinely temporary in nature.
Why TN only works for Canadian and Mexican professionals in listed occupations
TN is closed entirely to nationals of any country other than Canada or Mexico, and only covers roles matching one of the specific professional occupations under USMCA Appendix 2, such as engineer, accountant, or registered nurse. A seasonal landscaping or hospitality role generally has no path under TN at all, regardless of the worker's nationality.
Why H-2B covers a much broader range of seasonal roles
H-2B is open to workers of any nationality and covers a much wider range of temporary non-agricultural labor, hospitality, landscaping, seafood processing, construction, and similar seasonal or peak-load industries that fall well outside TN's professional occupation list.
Renewal reliability: TN's indefinite renewal vs H-2B's cap risk each season
An employer relying on TN for a recurring professional role faces essentially no risk of the category simply running out of numbers. An employer relying on H-2B for a recurring seasonal need has to plan around the real possibility that the cap fills before a petition can be filed for a given half-year period, particularly without a guaranteed supplemental allocation.
Cost and timing differences
TN processing, particularly for Canadian citizens at a port of entry, can be far faster than the multi-step H-2B labor certification and petition process, which generally has to be initiated months in advance of the anticipated start date to account for Department of Labor processing and cap timing.
Matching the category to the actual staffing pattern
An employer with a genuinely professional, USMCA-listed role and access to Canadian or Mexican candidates should look at TN first, given its reliability and lack of cap risk. An employer with a broader seasonal labor need that does not fit a listed professional occupation, or that draws from a wider pool of nationalities, generally has no option but H-2B, cap risk included.
Official sources
Related reading
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