diff --git a/dictation_server/src/api/odms/openapi.json b/dictation_server/src/api/odms/openapi.json
index 3d38853..9a5c27a 100644
--- a/dictation_server/src/api/odms/openapi.json
+++ b/dictation_server/src/api/odms/openapi.json
@@ -2551,7 +2551,7 @@
             "description": "割り当てられたユーザー",
             "allOf": [
               {
-                "$ref": "#/components/schemas/Assignee"
+                "$ref": "#/components/schemas/Typist"
               }
             ]
           },
@@ -2593,9 +2593,7 @@
           "isEncrypted",
           "jobNumber",
           "assignees",
-          "status",
-          "transcriptionStartedDate",
-          "transcriptionFinishedDate"
+          "status"
         ]
       },
       "TasksResponse": {
diff --git a/dictation_server/src/features/tasks/types/convert.ts b/dictation_server/src/features/tasks/types/convert.ts
index fcd164e..794f757 100644
--- a/dictation_server/src/features/tasks/types/convert.ts
+++ b/dictation_server/src/features/tasks/types/convert.ts
@@ -5,6 +5,7 @@ import { CheckoutPermission as CheckoutPermissionEntity } from '../../../reposit
 import { AudioOptionItem as AudioOptionItemEntity } from '../../../repositories/audio_option_items/entity/audio_option_item.entity';
 import { Task, Assignee } from './types';
 import { AudioOptionItem } from '../../files/types/types';
+import { Typist } from '../../../features/accounts/types/types';
 
 // Repository側のDTOからTaskオブジェクトの一覧を構築する
 export const createTasks = (
@@ -41,8 +42,8 @@ const createTask = (
   const assignees = createAssignees(permissions);
 
   // RepositoryDTO => ControllerDTOに変換
-  const typist: Assignee =
-    typist_user != null ? convertUserToAssignee(typist_user) : undefined;
+  const typist: Typist =
+    typist_user != null ? convertUserToTypist(typist_user) : undefined;
 
   return {
     audioFileId: task.audio_file_id,
@@ -114,3 +115,11 @@ const convertUserGroupToAssignee = (userGroup: UserGroupEntity): Assignee => {
     typistName: userGroup.name,
   };
 };
+
+// RepositoryDTOのUserからTypistオブジェクトを生成します
+const convertUserToTypist = (user: UserEntity): Typist => {
+  return {
+    id: user.id,
+    name: `USER_${user?.external_id}`, // XXX Azure AD B2Cから取得した名前を入れる
+  };
+};
diff --git a/dictation_server/src/features/tasks/types/types.ts b/dictation_server/src/features/tasks/types/types.ts
index 381f73b..0bc2d09 100644
--- a/dictation_server/src/features/tasks/types/types.ts
+++ b/dictation_server/src/features/tasks/types/types.ts
@@ -4,6 +4,7 @@ import { Type } from 'class-transformer';
 import { IsIn, IsInt, IsOptional, Min } from 'class-validator';
 import { TASK_LIST_SORTABLE_ATTRIBUTES } from '../../../constants';
 import { IsStatus } from '../../../common/validators/status.validator';
+import { Typist } from '../../../features/accounts/types/types';
 
 export class TasksRequest {
   @ApiProperty({
@@ -128,7 +129,7 @@ export class Task {
     required: false,
     description: '割り当てられたユーザー',
   })
-  typist?: Assignee | undefined;
+  typist?: Typist | undefined;
   @ApiProperty({
     type: [Assignee],
     description: