Extend an assignment

POST /api/v1/assignments/extend

Extends an existing assignment based on the provided job ID. Sets a new end date for bound coverage. If you attempt to extend after coverage has ended, or the end date is invalid, the request will fail. Updating end_date on a bound assignment via PUT is not supported; use this endpoint instead.

Certificate of Insurance (COI) regeneration: When extending coverage, COI PDFs are regenerated asynchronously to reflect the new end date. The response returns immediately with certificate_refresh_pending: true, indicating that:

• The certificate URLs in the response point to the old PDFs (pre-regeneration)
• Fresh certificate URLs will be included in the assignment.extended webhook, which is published after COI regeneration completes
• Fresh URLs can also be fetched via the API after background processing finishes

This async design ensures the API responds quickly without blocking for PDF generation.

Servers

• Production server: https://api.1099policy.com (Production server)

Parameters

Body: application/json (object)

• end_date (integer(int64)) New end date for the assignment, measured in seconds since the Unix epoch. Must be on or after the current end date and within one year of the effective date.

• job_id (string) The ID of the job associated with the assignment

• send_email (boolean) When true, send a coverage-extension notification email to the contractor. COI regeneration and webhook publication happen regardless of this flag.

Responses

200

Assignment end date updated, or unchanged (no-op) when end_date matches the current value. COIs are always regenerated asynchronously, so the response includes certificate_refresh_pending: true to indicate that certificate URLs are stale and fresh URLs will be available in the webhook.

Body: application/json (object)

• bind () Indicates whether to start the process of binding coverage, which includes notifying and subsequently charging the independent contractor for the premium amount due. Defaults to true. When false, 1099Policy does not notify or schedule a charge. Note that the independent contractor will not be issued coverage if bind is set to false.

• certificates (object)

• contractor (string) ID of the contractor.

• coverage_type (array[string]) An array of coverage types that can include one or more of the following insurance coverage values: general, professional and workers-comp. If provided, coverage type is factored into the eligibility determination (i.e., does contractor have an active workers-comp policy, etc). Defaults to the coverage types of the most recent active policy if coverage_type is not provided.

• created (integer(int64))

• effective_date (integer(int64)) The job assignment start date, measured in seconds since the Unix epoch.

• eligible (object)

• end_date (integer(int64)) The projected job assignment end date, measured in seconds since the Unix epoch.

• id (string)

• job (string) ID of the job that the contractor intends to accept.

• net_rate (integer) The amount of money the 1099 contractor pays in premium per every $100 earned.

A positive integer representing the premium owed per $100 earned. The net_rate is stored in cents (e.g., 48 represents $0.48).

• policy (string) ID of the policy that you want attached to the assignment. Defaults to the most recent active policy with a matching job category code, work state and contractor home state.

400

Invalid input, voided or cancelled record, expired coverage, attempted shortening, or same end date when no-op is not allowed.

404

Job not found, or no assignment found for the associated job id.