---
title: "Initiate the contract extension workflow for an employment"
method: POST
path: "/v2/providers/employers/employees/employments/{employmentId}/workflows/initiatecontractextension"
tags: ["Workflow employment"]
---

# Initiate the contract extension workflow for an employment

`POST /v2/providers/employers/employees/employments/{employmentId}/workflows/initiatecontractextension`

## Request

- Base URL: `https://api.loket.nl`
- URL: `https://api.loket.nl/v2/providers/employers/employees/employments/{employmentId}/workflows/initiatecontractextension`
- Auth: none required

__Activity name:__ <a href="https://developer.loket.nl/Activities/PostInitiateContractExtensionWorkflowByEmploymentId" target="_blank">PostInitiateContractExtensionWorkflowByEmploymentId</a><br>   <br><br>Allows the loket user to trigger a workflow to change the contract for an employment. The workflow may require the change to be approved.<br>

## Path parameters

- `employmentId` string, uuid, required

## Headers

- `Authorization` string, required
- `Accept` string, required

## Request body

- ContractExtensionRequest
  - `commissionUntilDate` string, date, nullable: The date on which the employment will end. NL: AanstellingTot
  - `startDateContractOfIndefiniteDuration` string, date, nullable: When did the value of `employmentDurationType` change for definite to indefinite. NL: Startdatum onbepaalde tijd This value should be te samen as the `startDate` if the contract was indefinite from the start.
  - `employmentDurationType` object: A selection of pre defined durations for the employment.
    - `key` integer
    - `value` string
  - `comment` string, nullable: An extra comment for the change request

## Response `202`

Accepted

- object: a warning indacateds that the given payload is valide, however take notice of the warning this might ifluence behavour.
  - `version` Version
    - `obsoleteDate` string, date, nullable: The date (can be null) on which the `resourceVersion` is no longer supported/available
    - `resourceVersion` string, date: The resource version of the object in the response
  - `messages` object[]
    - `type` string: Indication of the type of message. See [the general documentation for more information](./#section/Response/Messages)
    - `description` string: Describes the message
    - `id` string, uuid, nullable: In some cases when the message may relate to a specific entity, or specific group of entities, this field provides the identifier of that entity
    - `code` integer: Identifying code for the message
    - `properties` string[]: An array that can contain additional information
  - `content` ContractExtensionResponse
    - `id` string, uuid: The unique identifier of an object (GUID/UUID)

## Other responses

- `400`: Bad Request
- `401`: Unauthorized
- `403`: Forbidden
- `404`: Not Found
- `500`: Internal Server Error

---

[API](https://skmtc.dev/loket/apis/loket-api.md) - [All operations](https://skmtc.dev/loket/apis/loket-api/llms.txt) - [OpenAPI document](https://skmtc.dev/loket/apis/loket-api/revisions/32170564148f?raw)