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Thornton, CO Forecast

Immigration Law for Vendors

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All Suppliers of goods and services must comply with all current Colorado Law relating to employment eligibility.


Required Forms

  • If you are a sole proprietor or individual, you must submit the required...

        Affidavit Form
  • If you provide a service and not a product, you must submit the required...

        Certification Form
  • Any Supplier of services that is also an individual or sole proprietor must provide both documents above.

Contact Us

For more information, please email supscvsmail@cityofthornton.net or call 303-538-7325.



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City of Thornton
9500 Civic Center Drive, Thornton, CO 80229