# ListWorkerBlocks
<a name="ApiReference_ListWorkerBlocksOperation"></a>

## Description
<a name="ApiReference_ListWorkerBlocksOperation-description"></a>

The `ListWorkersBlocks` operation retrieves a list of Workers who are blocked from working on your HITs.

## Request Syntax
<a name="ApiReference_ListWorkerBlocksOperation-request-syntax"></a>

```
{ 
  "NextToken": String,

  "MaxResults": Integer
 }
```

## Request Parameters
<a name="ApiReference_ListWorkerBlocksOperation-request-parameters"></a>

 The request accepts the following data in JSON format: 


| Name | Description | Required | 
| --- | --- | --- | 
|   ` NextToken `   |  Pagination token Type: String  |  No  | 
|   ` MaxResults `   |   Type: Integer  |  No  | 

## Response Elements
<a name="ApiReference_ListWorkerBlocksOperation-response-elements"></a>

A successful request returns a paginated list of Workers that have been blocked along with the reason for the block.

## Example
<a name="ApiReference_ListWorkerBlocksOperation-examples"></a>

The following example shows how to use the `ListWorkerBlocks` operation:

### Sample Request
<a name="ApiReference_ListWorkerBlocksOperation-examples-sample-request"></a>

The following example lists all Worker blocks.

```
POST / HTTP/1.1
Host: mturk-requester.us-east-1.amazonaws.com
Content-Length: <PayloadSizeBytes>
X-Amz-Date: <Date>
{
}
```

### Sample Response
<a name="ApiReference_ListWorkerBlocksOperation-examples-sample-response"></a>

The following is an example response:

```
HTTP/1.1 200 OK
x-amzn-RequestId: <RequestId>
Content-Type: application/x-amz-json-1.1
Content-Length: <PayloadSizeBytes>
Date: <Date>
{
  WorkerBlocks:[{WorkerId, Reason}],
  NumResults:3
}
```