> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://developer.vitablehealth.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://developer.vitablehealth.com/_mcp/server.

# List an employer's ACA full-time employees

GET https://api.vitablehealth.com/v1/employers/{employer_id}/aca-full-time-employees

Returns the employer's employees who currently have an ACA full-time determination, with their designated (payroll) and ACA classifications, required coverage start date, and measurement/stability period windows.caller must be authorized for the employer. Responds 422 with `app_error_code` `aca_autopilot_not_entitled` when the employer's plan doesn't include ACA Autopilot, or `aca_policy_not_configured` when it does but no ACA policy is set up.

Reference: https://developer.vitablehealth.com/api/employers/list-employer-aca-full-time-employees

## Authentication

- `Authorization` header (bearer token, required) — API Key or Access Token authentication using Bearer token in Authorization header. API keys use the vit_apk_ prefix, access tokens use the vit_at_ prefix.

## Servers

- `https://api.vitablehealth.com` (Production, default)
- `https://api.uat.vitablehealth.com` (UAT)

## Request

### Path parameters

- `employer_id` (string, required) — Unique employer identifier (empr_*)

### Query parameters

- `aca_classification` (enum, optional) — Filters to an exact ACA classification.
  - Allowed values: `FULL_TIME`
- `limit` (integer, optional, default: 20) — Items per page (default: 20, max: 100)
- `name` (string, optional) — Filters to employees whose first or last name contains this text (case-insensitive).
- `page` (integer, optional, default: 1) — Page number (default: 1)

### Headers

- `X-Vitable-Organization` (string, optional) — Organization to act as for this request (e.g. `org_SGVsbG8gV29ybGQ`). Optional when your credentials reach a single organization. Required when they reach several — omitting it then returns 400 `organization_required`. A malformed value returns 400 `invalid_organization_header`, and naming an organization you do not have access to returns 403 `organization_access_denied`.

## Response

### 200

- `data` (list of ACAFullTimeEmployee, required)
- `pagination` (Pagination, required) — Pagination metadata for list responses.

## Errors

### 400 Bad Request Error

Bad Request - Invalid input or validation error

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

### 401 Unauthorized Error

Unauthorized - Invalid or missing API key

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

### 403 Forbidden Error

Forbidden - Insufficient permissions for this resource

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

### 404 Not Found Error

Not Found - The requested resource does not exist

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

### 409 Conflict Error

Conflict - Resource already exists or conflicts with current state

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

### 422 Unprocessable Entity Error

Unprocessable Entity - Business rule or domain invariant violated

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

### 429 Too Many Requests Error

Too Many Requests - Rate limit exceeded

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

### 500 Internal Server Error

Internal Server Error - An unexpected error occurred

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

### 502 Bad Gateway Error

Bad Gateway - External service error

- `timestamp` (datetime, required) — ISO 8601 timestamp when the error occurred
- `message` (string, required) — Human-readable error message
- `error` (string, required) — Error message (same as message, for backwards compatibility)
- `trace_id` (string, required) — Unique trace ID for debugging and support requests
- `app_error_code` (string, optional, nullable) — Application-specific error code for programmatic handling

## Types

### ACAFullTimeEmployee

One employee's ACA full-time determination, list view. Enrollment status is intentionally not included — see the DTO's docstring for why.

- `employee_id` (string, required) — Prefixed employee identifier (`empl_*`).
- `first_name` (string, required)
- `last_name` (string, required)
- `designated_classification` (enum, required) — Payroll classification. * `Full Time` - Full Time * `Part Time` - Part Time * `Temporary` - Temporary * `Intern` - Intern * `Seasonal` - Seasonal * `Individual Contractor` - Individual Contractor
  - Allowed values: `Full Time`, `Part Time`, `Temporary`, `Intern`, `Seasonal`, `Individual Contractor`
- `aca_classification` (enum, required) — ACA measurement outcome. Currently always FULL_TIME. * `FULL_TIME` - Full Time
  - Allowed values: `FULL_TIME`
- `required_coverage_start_date` (date, required) — Equals the stability period start date.
- `measurement_period_start_date` (date, required)
- `measurement_period_end_date` (date, required)
- `measurement_period_type` (enum, required) — `initial` for a new hire's initial measurement period, `standard` for the employer-wide one. * `initial` - Initial * `standard` - Standard
  - Allowed values: `initial`, `standard`
- `measurement_period_average_hours` (string, required) — Vendor-reported average hours over the measurement period.
- `stability_period_start_date` (date, required)
- `stability_period_end_date` (date, required)

### Pagination

Pagination metadata for list responses.

- `page` (integer, required) — Current page number
- `limit` (integer, required) — Items per page
- `total` (integer, required) — Total number of items
- `total_pages` (integer, required) — Total number of pages

## Examples

**Response**

```json
{
  "data": [
    {
      "employee_id": "string",
      "first_name": "string",
      "last_name": "string",
      "designated_classification": "Full Time",
      "aca_classification": "FULL_TIME",
      "required_coverage_start_date": "2023-01-15",
      "measurement_period_start_date": "2023-01-15",
      "measurement_period_end_date": "2023-01-15",
      "measurement_period_type": "initial",
      "measurement_period_average_hours": "string",
      "stability_period_start_date": "2023-01-15",
      "stability_period_end_date": "2023-01-15"
    }
  ],
  "pagination": {
    "page": 1,
    "limit": 1,
    "total": 1,
    "total_pages": 1
  }
}
```

**SDK Code**

```python
import requests

url = "https://api.vitablehealth.com/v1/employers/empr_abc123def456/aca-full-time-employees"

headers = {"Authorization": "Bearer <apiKey>"}

response = requests.get(url, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.vitablehealth.com/v1/employers/empr_abc123def456/aca-full-time-employees';
const options = {method: 'GET', headers: {Authorization: 'Bearer <apiKey>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.vitablehealth.com/v1/employers/empr_abc123def456/aca-full-time-employees"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <apiKey>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.vitablehealth.com/v1/employers/empr_abc123def456/aca-full-time-employees")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <apiKey>'

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.get("https://api.vitablehealth.com/v1/employers/empr_abc123def456/aca-full-time-employees")
  .header("Authorization", "Bearer <apiKey>")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.vitablehealth.com/v1/employers/empr_abc123def456/aca-full-time-employees', [
  'headers' => [
    'Authorization' => 'Bearer <apiKey>',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.vitablehealth.com/v1/employers/empr_abc123def456/aca-full-time-employees");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Bearer <apiKey>");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Authorization": "Bearer <apiKey>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.vitablehealth.com/v1/employers/empr_abc123def456/aca-full-time-employees")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```