Document types

document_type is the machine-readable identifier for a document. Unlike label, which is a
human-readable display name that may be reworded over time, document_type is stable and safe to
switch on in your integration.

document_type is returned on employee tax documents, contractor tax documents, and
setup documents. It is not currently returned on company tax documents or company authorization documents — use label, jurisdiction, year, and quarter to identify those, and see company tax document labels and descriptions for the labels those endpoints return.

The document_type values in the tables below are also the values accepted by the document_type
query parameter when listing employee tax documents or listing contractor tax documents. Repeat the parameter to match any of several types (for example, ?document_type=fed_w4&document_type=fed_w2). Filtering on a value Check does not recognize returns a 400.

Check adds new document types as we add support for new jurisdictions and forms, so treat these
lists as additive: handle unrecognized values gracefully rather than failing.

Employee tax documents

Returned on /documents/employee_tax_documents.

Contractor tax documents

Returned on /documents/contractor_tax_documents.

Setup documents

Returned on /documents/setup_documents.

Company provided documents

Company provided documents are a separate resource with their own document_type vocabulary, which you supply when creating the document rather than receiving it from Check. Those values are listed in Uploading Company Provided Documents.