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API Reference
These docs are for v2024-03-01. Click to read the latest docs for v2026-06-15.

Employer sign an employee's Form I-9

Sign an employee's Form I-9 as an employer. Once the form is signed, the employee's I-9 authorization is considered complete and cannot be modified.

scope: i9_authorizations:manage

Path Params
string
required

The UUID of the employee

Body Params
string
required

The signature

string
required

The signer's job title

string

The IP address of the signatory who signed the form. Both IPv4 AND IPv6 are supported. You must provide the IP address with either this parameter OR you can leave out this parameter and set the IP address in the request header using the x-gusto-client-ip header instead.

boolean
required

Whether you agree to sign electronically

string

Any additional notes

boolean

Whether an alternative procedure authorized by DHS to examine documents was used

Headers
string

Optional header to supply the IP address. This can be used to supply the IP address for signature endpoints instead of the signed_by_ip_address parameter.

string
enum
Defaults to 2024-03-01

Determines the date-based API version associated with your API call. If none is provided, your application's minimum API version is used.

Allowed:
Responses

404

Not Found

The requested resource does not exist. Make sure the provided UUID is valid.

Language
Credentials
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Response
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