diff --git a/openapi.yaml b/openapi.yaml
index 7654c84..8b99362 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -68,6 +68,8 @@ paths:
           $ref: '#/components/responses/BadRequest'
         '404':
           $ref: '#/components/responses/NotFound'
+        '500':
+          $ref: '#/components/responses/InternalServerError'
 
   /auth/codes/{authCodeId}/newUser:
     post:
@@ -95,6 +97,8 @@ paths:
           $ref: '#/components/responses/BadRequest'
         '404':
           $ref: '#/components/responses/NotFound'
+        '500':
+          $ref: '#/components/responses/InternalServerError'
 
 
   /users:
@@ -127,7 +131,9 @@ paths:
         '400':
           $ref: '#/components/responses/BadRequest'
         '401':
-          $ref: '#/components/responses/Unauthorized'
+          $ref: '#/components/responses/RegisterTokenExpired'
+        '500':
+          $ref: '#/components/responses/InternalServerError'
 
   /auth/token/refresh:
     post:
@@ -149,8 +155,12 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/RefreshTokenResponse'
+        '400':
+          $ref: '#/components/responses/InvalidRefreshToken'
         '401':
-          $ref: '#/components/responses/Unauthorized'
+          $ref: '#/components/responses/RefreshTokenExpired'
+        '500':
+          $ref: '#/components/responses/InternalServerError'
 
   /locations:
     get:
@@ -166,6 +176,8 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/GetLocationsResponse'
+        '500':
+          $ref: '#/components/responses/InternalServerError'
 
   /companies:
     get:
@@ -185,6 +197,8 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/SearchCompaniesResponse'
+        '500':
+          $ref: '#/components/responses/InternalServerError'
 
   /companies/{companyId}:
     get:
@@ -204,6 +218,8 @@ paths:
                 $ref: '#/components/schemas/GetCompanyDetailsResponse'
         '404':
           $ref: '#/components/responses/NotFound'
+        '500':
+          $ref: '#/components/responses/InternalServerError'
 
   /jobs:
     get:
@@ -223,6 +239,8 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/SearchJobsResponse'
+        '500':
+          $ref: '#/components/responses/InternalServerError'
 
 components:
   securitySchemes:
@@ -304,13 +322,27 @@ components:
         application/json:
           schema:
             $ref: '#/components/schemas/ErrorResponse'
-
-    Unauthorized:
-      description: 인증 실패
+          examples:
+            invalidRequest:
+              value:
+                time: "2024-05-01T00:00:00Z"
+                type: "COMMON"
+                code: "1001"
+                message: "잘못된 요청입니다."
+
+    RegisterTokenExpired:
+      description: 회원 가입 토큰 만료
       content:
         application/json:
           schema:
             $ref: '#/components/schemas/ErrorResponse'
+          examples:
+            tokenExpired:
+              value:
+                time: "2024-05-01T00:00:00Z"
+                type: "AUTH"
+                code: "1003"
+                message: "회원 가입 토큰이 만료되었습니다."
 
     NotFound:
       description: 리소스를 찾을 수 없음
@@ -318,37 +350,80 @@ components:
         application/json:
           schema:
             $ref: '#/components/schemas/ErrorResponse'
+          examples:
+            notFound:
+              value:
+                time: "2024-05-01T00:00:00Z"
+                type: "COMMON"
+                code: "1002"
+                message: "리소스를 찾을 수 없습니다."
+
+    InternalServerError:
+      description: 서버 오류
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/ErrorResponse'
+          examples:
+            serverError:
+              value:
+                time: "2024-05-01T00:00:00Z"
+                type: "COMMON"
+                code: "1003"
+                message: "서버 오류가 발생했습니다."
+
+    RefreshTokenExpired:
+      description: 리프레시 토큰 만료
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/ErrorResponse'
+          examples:
+            tokenExpired:
+              value:
+                time: "2024-05-01T00:00:00Z"
+                type: "AUTH"
+                code: "1008"
+                message: "리프레시 토큰이 만료되었습니다."
+
+    InvalidRefreshToken:
+      description: 유효하지 않은 리프레시 토큰
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/ErrorResponse'
+          examples:
+            invalidToken:
+              value:
+                time: "2024-05-01T00:00:00Z"
+                type: "AUTH"
+                code: "1009"
+                message: "유효하지 않은 리프레시 토큰입니다."
 
   schemas:
     ErrorResponse:
       type: object
       properties:
-        timestamp:
-          type: integer
-          format: int64
-          description: 에러 발생 시각 (Unix timestamp)
-        status:
-          type: integer
-          description: HTTP 상태 코드
-        error:
+        time:
+          type: string
+          format: date-time
+          description: 에러 발생 시각 (ISO 8601)
+          example: "2024-05-01T00:00:00Z"
+        type:
           type: string
           description: 에러 유형
-          example: USER
-        exception:
+          example: COMMON
+        code:
           type: string
-          description: 예외 클래스 이름
+          description: 에러 코드
+          example: "1001"
         message:
           type: string
           description: 상세 에러 메시지
-        path:
-          type: string
-          description: 에러가 발생한 요청 경로
       required:
-        - timestamp
-        - status
-        - error
-        - message
-        - path
+        - time
+        - type
+        - code
 
     SendAuthCodeRequest:
       type: object