Two different clocks run in every H-1B1 case, and they are easy to confuse. The visa is a travel document. It controls the window during which a person may present himself or herself at a port of entry. The period of authorized admission is separate, and it controls how long the person may actually remain and work. An 18-month visa does not produce an 18-month stay.
How long the visa itself can be valid. The Department of State publishes a reciprocity schedule for each country. For Chile, the H-1B-1 entry currently shows a validity period of 18 months, multiple entries, and no reciprocity fee. That is the outer limit on the visa foil, and it is where the familiar 18-month figure comes from. Reciprocity schedules are revised from time to time, so the current schedule for Chile should be checked rather than assumed.
How long the stay can be. By statute, the period of authorized admission in H-1B1 status is one year. INA 214(g)(8)(C). The Form I-94 issued on admission, not the visa, records the date to which the person is authorized to remain. Someone who enters on an 18-month H-1B1 visa should expect an I-94 valid for about a year, and should treat that date as the operative one.
Extensions. The same provision permits extensions, but only in one-year increments. After every second extension, the next one cannot be granted unless the Department of Labor has certified that the employer filed a further attestation under INA 212(t)(1). Extensions of stay for a person already in the United States are requested on Form I-129, which 8 CFR 214.1(c)(1) expressly lists for H-1B1 along with the other employment-based categories. See extensions and renewals of H-1B1 visas.
Why the mismatch matters. Because the visa can outlast the I-94, a person may hold a valid visa and still be out of status. Because the visa can also expire while status remains valid, a person may be lawfully present and employed and yet unable to return after a trip abroad without obtaining a new visa. The two dates need to be tracked separately. The same point applies to family: Chile’s reciprocity schedule currently shows H-4 visas at 12 months rather than 18, so a spouse’s visa may expire well before the principal’s. See multiple entries and family members.
Is there an outer limit on total time? This is less settled than it first appears. The regulation at 8 CFR 214.2(h)(13)(iii)(A) provides that an H-1B worker in a specialty occupation who has spent six years in the United States under section 101(a)(15)(H) or (L) may not obtain a further extension, change status, or be readmitted in those categories without a year spent abroad. The rule is written for H-1B, but its counting clause refers to section 101(a)(15)(H) as a whole, which takes in the H-1B1 subclause. Time spent in H-1B1 status should therefore be expected to count toward the six years when the same person later seeks a traditional H-1B. Whether the six-year ceiling caps H-1B1 extensions themselves is a different question. INA 214(g)(8)(C) authorizes one-year extensions without naming an outer limit, and INA 214(g)(8)(D), which charges the general H-1B numerical limit for each extension granted to a person who has already had five or more consecutive extensions, plainly contemplates H-1B1 stays running past six years. Anyone planning around a long H-1B1 stay should confirm current agency practice before relying on either reading.
Two short cushions, and an asymmetry worth knowing. If the employment on which the classification was based comes to an end, 8 CFR 214.1(l)(2) provides that an H-1B1 worker and dependents are not treated as having failed to maintain status on that basis alone for up to 60 consecutive days, or until the end of the authorized validity period if that is shorter, once during each authorized validity period. By contrast, the 10-day cushion before and after the validity period in 8 CFR 214.1(l)(1) lists E-1, E-2, E-3, H-1B, L-1 and TN, and does not name H-1B1. The regulation is worth reading closely before assuming an early arrival or a late departure is covered.
In short. The visa may be issued for as long as 18 months. The stay is authorized one year at a time, extendable in one-year steps, with a fresh labor attestation required after every second extension. The dates to watch are the I-94 expiration, the visa expiration, the passport validity, and the attestation cycle. See also the overview of the H-1B1 for Chileans, or contact us about a specific case.