H1b

What H1b does

H1b provides MCP tools for researching US H-1B sponsorship and wages from Labor Condition Application records. The data supports three related questions: whether an employer has sponsored H-1B workers, what disclosed base salaries look like for a role, and which employers file the most applications for a particular job title.

h1b_employer_sponsorship accepts an employer and optional year. It returns filing volume, salary-range information, and leading job titles and locations associated with matching employer records. Employer matching ranks exact names ahead of name-containing variants, and matching results identify the type of name match.

h1b_salary searches by job title and can narrow results by employer, city, year, and result limit. It returns salary statistics and sample disclosure records. h1b_top_sponsors ranks employers by filing count for a job title, optionally filtered by city and year, and includes median salary information.

How it works

Recent federal fiscal years are served from DOL’s own LCA disclosure files. Older years, or requests outside the locally loaded range, can use h1bdata.info, a third-party aggregator of the same underlying DOL data. Responses identify the source that supplied the result and include a data timestamp or source-related status where applicable.

The local dataset treats year as a federal fiscal year, running from October 1 through September 30. The fallback service uses a different year-filtering convention, so an identical year value may not represent the same twelve-month period across both sources. This distinction is exposed in response notes rather than hidden.

Local ingestion converts wage values into annualized base salary using the filing’s pay unit: hourly, weekly, biweekly, monthly, or yearly. DOL records are loaded with an allowlist of non-personal fields. Employer names, employer location, job, wage, and worksite data are retained, while named employer contacts, attorneys, agents, and preparers are excluded.

Tools and capabilities

• Check an employer’s H-1B filing count, salary range, common titles, and locations.
• Compare disclosed base salaries for a role across employers, cities, or years.
• Rank sponsors for a job title, with optional city and year filters.
• Use samples of underlying disclosure records alongside aggregate statistics.
• Distinguish DOL-mirror results from h1bdata.info fallback results.
• Avoid treating a database outage as evidence that an employer has no sponsorship: failed primary reads produce an indeterminate sponsorship value rather than a confident zero.

The local mirror avoids the raw-query row cap that can affect live aggregator searches, allowing sponsor rankings for DOL-served years to aggregate across all matching filings. Salary values still depend on the accuracy of the original filing; occasional wage-unit errors can produce implausible annualized figures. The records describe certified LCA filings, which are evidence of filings and disclosed wages rather than a guarantee of an eventual visa approval, hiring outcome, or green-card sponsorship.