Data sources

Everything on SponsoredStamp comes from official government records. We never scrape LinkedIn, Indeed or Glassdoor. Here is each source, its licence, and when we last loaded it.

United Kingdom

Dataset: Register of licensed sponsors: workers
Published by: UK Home Office
What it shows: Every organisation licensed to sponsor workers, with its visa routes and rating. It shows who may sponsor, not how many people they sponsor.
Licence: Open Government Licence v3.0
How often: Checked every day
Last loaded: 11 October 2026 file dated 9 October 2026
Employers: 126,541 in the latest data

United States

Dataset: H-1B Employer Data Hub
Published by: US Citizenship and Immigration Services (USCIS)
What it shows: H-1B petitions approved and denied for each employer, by fiscal year (first decisions only).
Licence: Public domain (work of the US federal government)
How often: Checked every month; USCIS publishes quarterly
Last loaded: 11 October 2026 latest period FY2026
Employers: 370,394 in the latest data

Canada

Dataset: Positive Labour Market Impact Assessment (LMIA) Employers List
Published by: Employment and Social Development Canada (ESDC)
What it shows: Employers approved to hire temporary foreign workers, with positions approved by occupation and program stream. Employers named after individuals are left out of the list by the government.
Licence: Open Government Licence – Canada
How often: Checked every month; published quarterly, about three months behind
Last loaded: 11 October 2026 latest period 2026Q1
Employers: 68,405 in the latest data

Coming later

US Department of Labor wage filings (salaries), the Netherlands IND register of recognised sponsors, Ireland's employment permit statistics and New Zealand's accredited employer list.

Attribution

Contains public sector information licensed under the Open Government Licence v3.0 (UK Home Office). Contains information licensed under the Open Government Licence – Canada (Employment and Social Development Canada). US data from USCIS is a work of the US federal government and is in the public domain. SponsoredStamp is not affiliated with or endorsed by any government.

Public information, not immigration advice. Not a guarantee of sponsorship.