diff --git a/api.hyungi.net/config/swagger.js b/api.hyungi.net/config/swagger.js
new file mode 100644
index 0000000..ce2621a
--- /dev/null
+++ b/api.hyungi.net/config/swagger.js
@@ -0,0 +1,497 @@
+// config/swagger.js - Swagger/OpenAPI 설정
+
+const swaggerJSDoc = require('swagger-jsdoc');
+
+const swaggerDefinition = {
+  openapi: '3.0.0',
+  info: {
+    title: 'Technical Korea Work Management API',
+    version: '2.1.0',
+    description: '보안이 강화된 생산관리 시스템 API - 작업자, 프로젝트, 일일 작업 보고서 관리',
+    contact: {
+      name: 'Technical Korea',
+      email: 'admin@technicalkorea.com'
+    },
+    license: {
+      name: 'MIT',
+      url: 'https://opensource.org/licenses/MIT'
+    }
+  },
+  servers: [
+    {
+      url: 'http://localhost:20005',
+      description: '개발 서버 (Docker)'
+    },
+    {
+      url: 'http://localhost:3005',
+      description: '로컬 개발 서버'
+    }
+  ],
+  components: {
+    securitySchemes: {
+      bearerAuth: {
+        type: 'http',
+        scheme: 'bearer',
+        bearerFormat: 'JWT',
+        description: 'JWT 토큰을 사용한 인증. 로그인 후 받은 토큰을 "Bearer {token}" 형식으로 입력하세요.'
+      }
+    },
+    schemas: {
+      // 공통 응답 스키마
+      SuccessResponse: {
+        type: 'object',
+        properties: {
+          success: {
+            type: 'boolean',
+            example: true
+          },
+          message: {
+            type: 'string',
+            example: '요청이 성공적으로 처리되었습니다.'
+          },
+          data: {
+            type: 'object',
+            description: '응답 데이터'
+          },
+          timestamp: {
+            type: 'string',
+            format: 'date-time',
+            example: '2024-01-01T00:00:00.000Z'
+          }
+        }
+      },
+      ErrorResponse: {
+        type: 'object',
+        properties: {
+          success: {
+            type: 'boolean',
+            example: false
+          },
+          error: {
+            type: 'string',
+            example: '오류 메시지'
+          },
+          timestamp: {
+            type: 'string',
+            format: 'date-time',
+            example: '2024-01-01T00:00:00.000Z'
+          }
+        }
+      },
+      PaginatedResponse: {
+        type: 'object',
+        properties: {
+          success: {
+            type: 'boolean',
+            example: true
+          },
+          message: {
+            type: 'string',
+            example: '데이터 조회 성공'
+          },
+          data: {
+            type: 'array',
+            items: {
+              type: 'object'
+            }
+          },
+          meta: {
+            type: 'object',
+            properties: {
+              pagination: {
+                type: 'object',
+                properties: {
+                  currentPage: { type: 'integer', example: 1 },
+                  totalPages: { type: 'integer', example: 10 },
+                  totalCount: { type: 'integer', example: 100 },
+                  limit: { type: 'integer', example: 10 },
+                  hasNextPage: { type: 'boolean', example: true },
+                  hasPrevPage: { type: 'boolean', example: false }
+                }
+              }
+            }
+          },
+          timestamp: {
+            type: 'string',
+            format: 'date-time'
+          }
+        }
+      },
+      
+      // 사용자 관련 스키마
+      User: {
+        type: 'object',
+        properties: {
+          user_id: {
+            type: 'integer',
+            example: 1,
+            description: '사용자 ID'
+          },
+          username: {
+            type: 'string',
+            example: 'admin',
+            description: '사용자명'
+          },
+          name: {
+            type: 'string',
+            example: '관리자',
+            description: '실명'
+          },
+          email: {
+            type: 'string',
+            format: 'email',
+            example: 'admin@technicalkorea.com',
+            description: '이메일 주소'
+          },
+          role: {
+            type: 'string',
+            example: 'admin',
+            description: '역할'
+          },
+          access_level: {
+            type: 'string',
+            enum: ['user', 'admin', 'system'],
+            example: 'admin',
+            description: '접근 권한 레벨'
+          },
+          worker_id: {
+            type: 'integer',
+            example: 1,
+            description: '연결된 작업자 ID'
+          },
+          is_active: {
+            type: 'boolean',
+            example: true,
+            description: '활성 상태'
+          },
+          last_login_at: {
+            type: 'string',
+            format: 'date-time',
+            description: '마지막 로그인 시간'
+          },
+          created_at: {
+            type: 'string',
+            format: 'date-time',
+            description: '생성 시간'
+          },
+          updated_at: {
+            type: 'string',
+            format: 'date-time',
+            description: '수정 시간'
+          }
+        }
+      },
+      
+      // 작업자 관련 스키마
+      Worker: {
+        type: 'object',
+        properties: {
+          worker_id: {
+            type: 'integer',
+            example: 1,
+            description: '작업자 ID'
+          },
+          worker_name: {
+            type: 'string',
+            example: '김철수',
+            description: '작업자 이름'
+          },
+          position: {
+            type: 'string',
+            example: '용접공',
+            description: '직책'
+          },
+          department: {
+            type: 'string',
+            example: '생산부',
+            description: '부서'
+          },
+          phone: {
+            type: 'string',
+            example: '010-1234-5678',
+            description: '전화번호'
+          },
+          email: {
+            type: 'string',
+            format: 'email',
+            example: 'worker@technicalkorea.com',
+            description: '이메일'
+          },
+          hire_date: {
+            type: 'string',
+            format: 'date',
+            example: '2024-01-01',
+            description: '입사일'
+          },
+          is_active: {
+            type: 'boolean',
+            example: true,
+            description: '활성 상태'
+          },
+          created_at: {
+            type: 'string',
+            format: 'date-time',
+            description: '생성 시간'
+          },
+          updated_at: {
+            type: 'string',
+            format: 'date-time',
+            description: '수정 시간'
+          }
+        }
+      },
+      
+      // 프로젝트 관련 스키마
+      Project: {
+        type: 'object',
+        properties: {
+          project_id: {
+            type: 'integer',
+            example: 1,
+            description: '프로젝트 ID'
+          },
+          project_name: {
+            type: 'string',
+            example: '신규 플랜트 건설',
+            description: '프로젝트 이름'
+          },
+          description: {
+            type: 'string',
+            example: '대형 화학 플랜트 건설 프로젝트',
+            description: '프로젝트 설명'
+          },
+          start_date: {
+            type: 'string',
+            format: 'date',
+            example: '2024-01-01',
+            description: '시작일'
+          },
+          end_date: {
+            type: 'string',
+            format: 'date',
+            example: '2024-12-31',
+            description: '종료일'
+          },
+          status: {
+            type: 'string',
+            example: 'active',
+            description: '프로젝트 상태'
+          },
+          created_at: {
+            type: 'string',
+            format: 'date-time',
+            description: '생성 시간'
+          },
+          updated_at: {
+            type: 'string',
+            format: 'date-time',
+            description: '수정 시간'
+          }
+        }
+      },
+      
+      // 작업 관련 스키마
+      Task: {
+        type: 'object',
+        properties: {
+          task_id: {
+            type: 'integer',
+            example: 1,
+            description: '작업 ID'
+          },
+          task_name: {
+            type: 'string',
+            example: '용접 작업',
+            description: '작업 이름'
+          },
+          description: {
+            type: 'string',
+            example: '파이프 용접 작업',
+            description: '작업 설명'
+          },
+          category: {
+            type: 'string',
+            example: '용접',
+            description: '작업 카테고리'
+          },
+          is_active: {
+            type: 'boolean',
+            example: true,
+            description: '활성 상태'
+          },
+          created_at: {
+            type: 'string',
+            format: 'date-time',
+            description: '생성 시간'
+          },
+          updated_at: {
+            type: 'string',
+            format: 'date-time',
+            description: '수정 시간'
+          }
+        }
+      },
+      
+      // 일일 작업 보고서 관련 스키마
+      DailyWorkReport: {
+        type: 'object',
+        properties: {
+          id: {
+            type: 'integer',
+            example: 1,
+            description: '보고서 ID'
+          },
+          report_date: {
+            type: 'string',
+            format: 'date',
+            example: '2024-01-01',
+            description: '작업 날짜'
+          },
+          worker_id: {
+            type: 'integer',
+            example: 1,
+            description: '작업자 ID'
+          },
+          project_id: {
+            type: 'integer',
+            example: 1,
+            description: '프로젝트 ID'
+          },
+          work_type_id: {
+            type: 'integer',
+            example: 1,
+            description: '작업 유형 ID'
+          },
+          work_status_id: {
+            type: 'integer',
+            example: 1,
+            description: '작업 상태 ID (1:정규, 2:에러)'
+          },
+          error_type_id: {
+            type: 'integer',
+            example: null,
+            description: '에러 유형 ID (에러일 때만)'
+          },
+          work_hours: {
+            type: 'number',
+            format: 'decimal',
+            example: 8.5,
+            description: '작업 시간'
+          },
+          created_by: {
+            type: 'integer',
+            example: 1,
+            description: '작성자 user_id'
+          },
+          created_at: {
+            type: 'string',
+            format: 'date-time',
+            description: '생성 시간'
+          },
+          updated_at: {
+            type: 'string',
+            format: 'date-time',
+            description: '수정 시간'
+          },
+          // 조인된 데이터
+          worker_name: {
+            type: 'string',
+            example: '김철수',
+            description: '작업자 이름'
+          },
+          project_name: {
+            type: 'string',
+            example: '신규 플랜트 건설',
+            description: '프로젝트 이름'
+          },
+          work_type_name: {
+            type: 'string',
+            example: '용접',
+            description: '작업 유형 이름'
+          },
+          work_status_name: {
+            type: 'string',
+            example: '정규',
+            description: '작업 상태 이름'
+          },
+          error_type_name: {
+            type: 'string',
+            example: null,
+            description: '에러 유형 이름'
+          }
+        }
+      },
+      
+      // 로그인 관련 스키마
+      LoginRequest: {
+        type: 'object',
+        required: ['username', 'password'],
+        properties: {
+          username: {
+            type: 'string',
+            example: 'admin',
+            description: '사용자명'
+          },
+          password: {
+            type: 'string',
+            example: 'password123',
+            description: '비밀번호'
+          }
+        }
+      },
+      LoginResponse: {
+        type: 'object',
+        properties: {
+          success: {
+            type: 'boolean',
+            example: true
+          },
+          message: {
+            type: 'string',
+            example: '로그인 성공'
+          },
+          data: {
+            type: 'object',
+            properties: {
+              user: {
+                $ref: '#/components/schemas/User'
+              },
+              token: {
+                type: 'string',
+                example: 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...',
+                description: 'JWT 토큰'
+              },
+              redirectUrl: {
+                type: 'string',
+                example: '/pages/dashboard/group-leader.html',
+                description: '리다이렉트 URL'
+              }
+            }
+          },
+          timestamp: {
+            type: 'string',
+            format: 'date-time'
+          }
+        }
+      }
+    }
+  },
+  security: [
+    {
+      bearerAuth: []
+    }
+  ]
+};
+
+const options = {
+  definition: swaggerDefinition,
+  apis: [
+    './routes/*.js',
+    './controllers/*.js',
+    './index.js'
+  ]
+};
+
+const swaggerSpec = swaggerJSDoc(options);
+
+module.exports = swaggerSpec;
diff --git a/api.hyungi.net/index.js b/api.hyungi.net/index.js
index 6fa9e7b..818c6bf 100644
--- a/api.hyungi.net/index.js
+++ b/api.hyungi.net/index.js
@@ -9,6 +9,10 @@ const rateLimit = require('express-rate-limit');
 const { errorMiddleware } = require('./utils/errorHandler');
 const { responseMiddleware } = require('./utils/responseFormatter');
 
+// Swagger 설정
+const swaggerUi = require('swagger-ui-express');
+const swaggerSpec = require('./config/swagger');
+
 const app = express();
 
 // 헬스체크와 개발용 엔드포인트는 CORS 이후에 등록
@@ -322,6 +326,27 @@ app.use('/api/tools', toolsRoute);
 // 📤 파일 업로드
 app.use('/api', uploadBgRoutes);
 
+// ===== 📚 Swagger API 문서 =====
+app.use('/api-docs', swaggerUi.serve, swaggerUi.setup(swaggerSpec, {
+  explorer: true,
+  customCss: '.swagger-ui .topbar { display: none }',
+  customSiteTitle: 'TK Work Management API',
+  swaggerOptions: {
+    persistAuthorization: true,
+    displayRequestDuration: true,
+    docExpansion: 'none',
+    filter: true,
+    showExtensions: true,
+    showCommonExtensions: true
+  }
+}));
+
+// Swagger JSON 스펙 제공
+app.get('/api-docs.json', (req, res) => {
+  res.setHeader('Content-Type', 'application/json');
+  res.send(swaggerSpec);
+});
+
 // ===== 🚨 에러 핸들러 (모든 라우트 뒤에 위치) =====
 app.use(errorMiddleware);
 
diff --git a/api.hyungi.net/package-lock.json b/api.hyungi.net/package-lock.json
index a328e0a..7fbde7e 100644
--- a/api.hyungi.net/package-lock.json
+++ b/api.hyungi.net/package-lock.json
@@ -22,7 +22,53 @@
         "mysql2": "^3.14.1",
         "pm2": "^5.3.0",
         "qrcode": "^1.5.4",
-        "sqlite3": "^5.1.6"
+        "sqlite3": "^5.1.6",
+        "swagger-jsdoc": "^6.2.8",
+        "swagger-ui-express": "^5.0.1"
+      }
+    },
+    "node_modules/@apidevtools/json-schema-ref-parser": {
+      "version": "9.1.2",
+      "resolved": "https://registry.npmjs.org/@apidevtools/json-schema-ref-parser/-/json-schema-ref-parser-9.1.2.tgz",
+      "integrity": "sha512-r1w81DpR+KyRWd3f+rk6TNqMgedmAxZP5v5KWlXQWlgMUUtyEJch0DKEci1SorPMiSeM8XPl7MZ3miJ60JIpQg==",
+      "license": "MIT",
+      "dependencies": {
+        "@jsdevtools/ono": "^7.1.3",
+        "@types/json-schema": "^7.0.6",
+        "call-me-maybe": "^1.0.1",
+        "js-yaml": "^4.1.0"
+      }
+    },
+    "node_modules/@apidevtools/openapi-schemas": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/@apidevtools/openapi-schemas/-/openapi-schemas-2.1.0.tgz",
+      "integrity": "sha512-Zc1AlqrJlX3SlpupFGpiLi2EbteyP7fXmUOGup6/DnkRgjP9bgMM/ag+n91rsv0U1Gpz0H3VILA/o3bW7Ua6BQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/@apidevtools/swagger-methods": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/@apidevtools/swagger-methods/-/swagger-methods-3.0.2.tgz",
+      "integrity": "sha512-QAkD5kK2b1WfjDS/UQn/qQkbwF31uqRjPTrsCs5ZG9BQGAkjwvqGFjjPqAuzac/IYzpPtRzjCP1WrTuAIjMrXg==",
+      "license": "MIT"
+    },
+    "node_modules/@apidevtools/swagger-parser": {
+      "version": "10.0.3",
+      "resolved": "https://registry.npmjs.org/@apidevtools/swagger-parser/-/swagger-parser-10.0.3.tgz",
+      "integrity": "sha512-sNiLY51vZOmSPFZA5TF35KZ2HbgYklQnTSDnkghamzLb3EkNtcQnrBQEj5AOCxHpTtXpqMCRM1CrmV2rG6nw4g==",
+      "license": "MIT",
+      "dependencies": {
+        "@apidevtools/json-schema-ref-parser": "^9.0.6",
+        "@apidevtools/openapi-schemas": "^2.0.4",
+        "@apidevtools/swagger-methods": "^3.0.2",
+        "@jsdevtools/ono": "^7.1.3",
+        "call-me-maybe": "^1.0.1",
+        "z-schema": "^5.0.1"
+      },
+      "peerDependencies": {
+        "openapi-types": ">=7"
       }
     },
     "node_modules/@gar/promisify": {
@@ -37,6 +83,12 @@
       "resolved": "https://registry.npmjs.org/@hexagon/base64/-/base64-1.1.28.tgz",
       "integrity": "sha512-lhqDEAvWixy3bZ+UOYbPwUbBkwBq5C1LAJ/xPC8Oi+lL54oyakv/npbA0aU2hgCsx/1NUd4IBvV03+aUBWxerw=="
     },
+    "node_modules/@jsdevtools/ono": {
+      "version": "7.1.3",
+      "resolved": "https://registry.npmjs.org/@jsdevtools/ono/-/ono-7.1.3.tgz",
+      "integrity": "sha512-4JQNk+3mVzK3xh2rqd6RB4J46qUR19azEHBneZyTZM+c456qOrbbM/5xcR8huNCCcbVt7+UmizG6GuUvPvKUYg==",
+      "license": "MIT"
+    },
     "node_modules/@levischuck/tiny-cbor": {
       "version": "0.2.11",
       "resolved": "https://registry.npmjs.org/@levischuck/tiny-cbor/-/tiny-cbor-0.2.11.tgz",
@@ -342,6 +394,13 @@
         "debug": "^4.3.1"
       }
     },
+    "node_modules/@scarf/scarf": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/@scarf/scarf/-/scarf-1.4.0.tgz",
+      "integrity": "sha512-xxeapPiUXdZAE3che6f3xogoJPeZgig6omHEy1rIY5WVsB3H2BHNnZH+gHG6x91SCWyQCzWGsuL2Hh3ClO5/qQ==",
+      "hasInstallScript": true,
+      "license": "Apache-2.0"
+    },
     "node_modules/@simplewebauthn/server": {
       "version": "13.1.1",
       "resolved": "https://registry.npmjs.org/@simplewebauthn/server/-/server-13.1.1.tgz",
@@ -374,6 +433,12 @@
       "resolved": "https://registry.npmjs.org/@tootallnate/quickjs-emscripten/-/quickjs-emscripten-0.23.0.tgz",
       "integrity": "sha512-C5Mc6rdnsaJDjO3UpGW/CQTHtCKaYlScZTly4JIu97Jxo/odCiH0ITnDXSJPTOrEKk/ycSZ0AOgTmkDtkOsvIA=="
     },
+    "node_modules/@types/json-schema": {
+      "version": "7.0.15",
+      "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.15.tgz",
+      "integrity": "sha512-5+fP8P8MFNC+AyZCDxrB2pkZFPGzqQWUzpSeuuVLvm8VMcorNYavBqoFcxK8bQz4Qsbn4oUEEem4wDLfcysGHA==",
+      "license": "MIT"
+    },
     "node_modules/abbrev": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
@@ -612,8 +677,7 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
       "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
-      "license": "MIT",
-      "optional": true
+      "license": "MIT"
     },
     "node_modules/base64-js": {
       "version": "1.5.1",
@@ -748,7 +812,6 @@
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.12.tgz",
       "integrity": "sha512-9T9UjW3r0UW5c1Q7GTwllptXwhvYmEzFhzMfZ9H7FQWt+uZePjZPjBP/W1ZEyZ1twGWom5/56TF4lPcqjnDHcg==",
       "license": "MIT",
-      "optional": true,
       "dependencies": {
         "balanced-match": "^1.0.0",
         "concat-map": "0.0.1"
@@ -892,6 +955,12 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/call-me-maybe": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/call-me-maybe/-/call-me-maybe-1.0.2.tgz",
+      "integrity": "sha512-HpX65o1Hnr9HH25ojC1YGs7HCQLq0GCOibSaWER0eNpgJ/Z1MZv2mTc7+xh6WOPxbRVcmgbv4hGU+uSQ/2xFZQ==",
+      "license": "MIT"
+    },
     "node_modules/camelcase": {
       "version": "5.3.1",
       "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
@@ -1015,8 +1084,7 @@
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
       "integrity": "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==",
-      "license": "MIT",
-      "optional": true
+      "license": "MIT"
     },
     "node_modules/concat-stream": {
       "version": "1.6.2",
@@ -1235,6 +1303,18 @@
       "resolved": "https://registry.npmjs.org/dijkstrajs/-/dijkstrajs-1.0.3.tgz",
       "integrity": "sha512-qiSlmBq9+BCdCA/L46dw8Uy93mloxsPSbwnm5yrKn2vMPiy8KyAskTF6zuV/j5BMsmOGZDPs7KjU+mjb670kfA=="
     },
+    "node_modules/doctrine": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-3.0.0.tgz",
+      "integrity": "sha512-yS+Q5i3hBf7GBkd4KG8a7eBNNWNGLTaEwwYWUijIYM7zrlYDM0BFXHjjPWlWZ1Rg7UaddZeIDmi9jF3HmqiQ2w==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "esutils": "^2.0.2"
+      },
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
     "node_modules/dotenv": {
       "version": "16.5.0",
       "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.5.0.tgz",
@@ -1682,8 +1762,7 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
       "integrity": "sha512-OO0pH2lK6a0hZnAdau5ItzHPI6pUlvI7jMVnxUQRtw4owF2wk8lOSabtGDCTP4Ggrg2MbGnWO9X8K1t4+fGMDw==",
-      "license": "ISC",
-      "optional": true
+      "license": "ISC"
     },
     "node_modules/fsevents": {
       "version": "2.3.3",
@@ -2037,7 +2116,6 @@
       "integrity": "sha512-k92I/b08q4wvFscXCLvqfsHCrjrF7yiXsQuIVvVE7N82W3+aqpzuUdBbfhWcy/FZR3/4IgflMgKLOsvPDrGCJA==",
       "deprecated": "This module is not supported, and leaks memory. Do not use it. Check out lru-cache if you want a good and tested way to coalesce async requests by a key value, which is much more comprehensive and powerful.",
       "license": "ISC",
-      "optional": true,
       "dependencies": {
         "once": "^1.3.0",
         "wrappy": "1"
@@ -2267,6 +2345,13 @@
       "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
       "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
     },
+    "node_modules/lodash.get": {
+      "version": "4.4.2",
+      "resolved": "https://registry.npmjs.org/lodash.get/-/lodash.get-4.4.2.tgz",
+      "integrity": "sha512-z+Uw/vLuy6gQe8cfaFWD7p0wVv8fJl3mbzXh33RS+0oW2wvUqiRXiQ69gLWSLpgB5/6sU+r6BlQR0MBILadqTQ==",
+      "deprecated": "This package is deprecated. Use the optional chaining (?.) operator instead.",
+      "license": "MIT"
+    },
     "node_modules/lodash.includes": {
       "version": "4.3.0",
       "resolved": "https://registry.npmjs.org/lodash.includes/-/lodash.includes-4.3.0.tgz",
@@ -2277,6 +2362,13 @@
       "resolved": "https://registry.npmjs.org/lodash.isboolean/-/lodash.isboolean-3.0.3.tgz",
       "integrity": "sha512-Bz5mupy2SVbPHURB98VAcw+aHh4vRV5IPNhILUCsOzRmsTmSQ17jIuqopAentWoehktxGd9e/hbIXq980/1QJg=="
     },
+    "node_modules/lodash.isequal": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/lodash.isequal/-/lodash.isequal-4.5.0.tgz",
+      "integrity": "sha512-pDo3lu8Jhfjqls6GkMgpahsF9kCyayhgykjyLMNFTKWrpVdAQtYyB4muAMWozBB4ig/dtWAmsMxLEI8wuz+DYQ==",
+      "deprecated": "This package is deprecated. Use require('node:util').isDeepStrictEqual instead.",
+      "license": "MIT"
+    },
     "node_modules/lodash.isinteger": {
       "version": "4.0.4",
       "resolved": "https://registry.npmjs.org/lodash.isinteger/-/lodash.isinteger-4.0.4.tgz",
@@ -2297,6 +2389,12 @@
       "resolved": "https://registry.npmjs.org/lodash.isstring/-/lodash.isstring-4.0.1.tgz",
       "integrity": "sha512-0wJxfxH1wgO3GrbuP+dTTk7op+6L41QCXbGINEmD+ny/G/eCqGzxyCsh7159S+mgDDcoarnBw6PC1PS5+wUGgw=="
     },
+    "node_modules/lodash.mergewith": {
+      "version": "4.6.2",
+      "resolved": "https://registry.npmjs.org/lodash.mergewith/-/lodash.mergewith-4.6.2.tgz",
+      "integrity": "sha512-GK3g5RPZWTRSeLSpgP8Xhra+pnjBC56q9FZYe1d5RN3TJ35dbkGy3YqBSMbyCrlbi+CM9Z3Jk5yTL7RCsqboyQ==",
+      "license": "MIT"
+    },
     "node_modules/lodash.once": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/lodash.once/-/lodash.once-4.1.1.tgz",
@@ -2449,7 +2547,6 @@
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
       "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==",
       "license": "ISC",
-      "optional": true,
       "dependencies": {
         "brace-expansion": "^1.1.7"
       },
@@ -2861,6 +2958,13 @@
         "wrappy": "1"
       }
     },
+    "node_modules/openapi-types": {
+      "version": "12.1.3",
+      "resolved": "https://registry.npmjs.org/openapi-types/-/openapi-types-12.1.3.tgz",
+      "integrity": "sha512-N4YtSYJqghVu4iek2ZUvcN/0aqH1kRDuNqzcycDxhOUpg7GdvLa2F3DgS6yBNhInhv2r/6I0Flkn7CqL8+nIcw==",
+      "license": "MIT",
+      "peer": true
+    },
     "node_modules/p-limit": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.3.0.tgz",
@@ -3012,7 +3116,6 @@
       "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
       "integrity": "sha512-AVbw3UJ2e9bq64vSaS9Am0fje1Pa8pbGqTTsmXfaIiMpnr5DlDhfJOuLj9Sf95ZPVDAUerDfEk88MPmPe7UCQg==",
       "license": "MIT",
-      "optional": true,
       "engines": {
         "node": ">=0.10.0"
       }
@@ -4031,6 +4134,92 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/swagger-jsdoc": {
+      "version": "6.2.8",
+      "resolved": "https://registry.npmjs.org/swagger-jsdoc/-/swagger-jsdoc-6.2.8.tgz",
+      "integrity": "sha512-VPvil1+JRpmJ55CgAtn8DIcpBs0bL5L3q5bVQvF4tAW/k/9JYSj7dCpaYCAv5rufe0vcCbBRQXGvzpkWjvLklQ==",
+      "license": "MIT",
+      "dependencies": {
+        "commander": "6.2.0",
+        "doctrine": "3.0.0",
+        "glob": "7.1.6",
+        "lodash.mergewith": "^4.6.2",
+        "swagger-parser": "^10.0.3",
+        "yaml": "2.0.0-1"
+      },
+      "bin": {
+        "swagger-jsdoc": "bin/swagger-jsdoc.js"
+      },
+      "engines": {
+        "node": ">=12.0.0"
+      }
+    },
+    "node_modules/swagger-jsdoc/node_modules/commander": {
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-6.2.0.tgz",
+      "integrity": "sha512-zP4jEKbe8SHzKJYQmq8Y9gYjtO/POJLgIdKgV7B9qNmABVFVc+ctqSX6iXh4mCpJfRBOabiZ2YKPg8ciDw6C+Q==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 6"
+      }
+    },
+    "node_modules/swagger-jsdoc/node_modules/glob": {
+      "version": "7.1.6",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz",
+      "integrity": "sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==",
+      "deprecated": "Glob versions prior to v9 are no longer supported",
+      "license": "ISC",
+      "dependencies": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.0.4",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
+      },
+      "engines": {
+        "node": "*"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/swagger-parser": {
+      "version": "10.0.3",
+      "resolved": "https://registry.npmjs.org/swagger-parser/-/swagger-parser-10.0.3.tgz",
+      "integrity": "sha512-nF7oMeL4KypldrQhac8RyHerJeGPD1p2xDh900GPvc+Nk7nWP6jX2FcC7WmkinMoAmoO774+AFXcWsW8gMWEIg==",
+      "license": "MIT",
+      "dependencies": {
+        "@apidevtools/swagger-parser": "10.0.3"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/swagger-ui-dist": {
+      "version": "5.30.1",
+      "resolved": "https://registry.npmjs.org/swagger-ui-dist/-/swagger-ui-dist-5.30.1.tgz",
+      "integrity": "sha512-4mNAUM31sr52K3JcK9qiGbfsFKNh/dm3PkEe+F9FAM31YY/NoRYUgsR/L6d7LLFn6PgZXtBG2ygp8+7UnpUIPg==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@scarf/scarf": "=1.4.0"
+      }
+    },
+    "node_modules/swagger-ui-express": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/swagger-ui-express/-/swagger-ui-express-5.0.1.tgz",
+      "integrity": "sha512-SrNU3RiBGTLLmFU8GIJdOdanJTl4TOmT27tt3bWWHppqYmAZ6IDuEuBvMU6nZq0zLEe6b/1rACXCgLZqO6ZfrA==",
+      "license": "MIT",
+      "dependencies": {
+        "swagger-ui-dist": ">=5.0.0"
+      },
+      "engines": {
+        "node": ">= v0.10.32"
+      },
+      "peerDependencies": {
+        "express": ">=4.0.0 || >=5.0.0-beta"
+      }
+    },
     "node_modules/systeminformation": {
       "version": "5.27.1",
       "resolved": "https://registry.npmjs.org/systeminformation/-/systeminformation-5.27.1.tgz",
@@ -4389,6 +4578,15 @@
       "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
       "license": "ISC"
     },
+    "node_modules/yaml": {
+      "version": "2.0.0-1",
+      "resolved": "https://registry.npmjs.org/yaml/-/yaml-2.0.0-1.tgz",
+      "integrity": "sha512-W7h5dEhywMKenDJh2iX/LABkbFnBxasD27oyXWDS/feDsxiw0dD5ncXdYXgkvAsXIY2MpW/ZKkr9IU30DBdMNQ==",
+      "license": "ISC",
+      "engines": {
+        "node": ">= 6"
+      }
+    },
     "node_modules/yargs": {
       "version": "15.4.1",
       "resolved": "https://registry.npmjs.org/yargs/-/yargs-15.4.1.tgz",
@@ -4421,6 +4619,36 @@
       "engines": {
         "node": ">=6"
       }
+    },
+    "node_modules/z-schema": {
+      "version": "5.0.5",
+      "resolved": "https://registry.npmjs.org/z-schema/-/z-schema-5.0.5.tgz",
+      "integrity": "sha512-D7eujBWkLa3p2sIpJA0d1pr7es+a7m0vFAnZLlCEKq/Ij2k0MLi9Br2UPxoxdYystm5K1yeBGzub0FlYUEWj2Q==",
+      "license": "MIT",
+      "dependencies": {
+        "lodash.get": "^4.4.2",
+        "lodash.isequal": "^4.5.0",
+        "validator": "^13.7.0"
+      },
+      "bin": {
+        "z-schema": "bin/z-schema"
+      },
+      "engines": {
+        "node": ">=8.0.0"
+      },
+      "optionalDependencies": {
+        "commander": "^9.4.1"
+      }
+    },
+    "node_modules/z-schema/node_modules/commander": {
+      "version": "9.5.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-9.5.0.tgz",
+      "integrity": "sha512-KRs7WVDKg86PWiuAqhDrAQnTXZKraVcCc6vFdL14qrZ/DcWwuRo7VoiYXalXO7S5GKpqYiVEwCbgFDfxNHKJBQ==",
+      "license": "MIT",
+      "optional": true,
+      "engines": {
+        "node": "^12.20.0 || >=14"
+      }
     }
   }
 }
diff --git a/api.hyungi.net/package.json b/api.hyungi.net/package.json
index f45fe7c..745632b 100644
--- a/api.hyungi.net/package.json
+++ b/api.hyungi.net/package.json
@@ -21,6 +21,8 @@
     "mysql2": "^3.14.1",
     "pm2": "^5.3.0",
     "qrcode": "^1.5.4",
-    "sqlite3": "^5.1.6"
+    "sqlite3": "^5.1.6",
+    "swagger-jsdoc": "^6.2.8",
+    "swagger-ui-express": "^5.0.1"
   }
 }
diff --git a/api.hyungi.net/routes/authRoutes.js b/api.hyungi.net/routes/authRoutes.js
index afaa9fd..a4bf573 100644
--- a/api.hyungi.net/routes/authRoutes.js
+++ b/api.hyungi.net/routes/authRoutes.js
@@ -1,3 +1,10 @@
+/**
+ * @swagger
+ * tags:
+ *   name: Authentication
+ *   description: 사용자 인증 및 권한 관리 API
+ */
+
 // routes/authRoutes.js - 비밀번호 변경 및 보안 기능 포함 완전판
 const express = require('express');
 const bcrypt = require('bcryptjs');
@@ -71,7 +78,49 @@ const recordLoginHistory = async (connection, userId, success, ipAddress, userAg
 };
 
 /**
- * 로그인 - DB 연동 (보안 강화)
+ * @swagger
+ * /api/auth/login:
+ *   post:
+ *     tags: [Authentication]
+ *     summary: 사용자 로그인
+ *     description: 사용자명과 비밀번호로 로그인하여 JWT 토큰을 발급받습니다.
+ *     requestBody:
+ *       required: true
+ *       content:
+ *         application/json:
+ *           schema:
+ *             $ref: '#/components/schemas/LoginRequest'
+ *     responses:
+ *       200:
+ *         description: 로그인 성공
+ *         content:
+ *           application/json:
+ *             schema:
+ *               $ref: '#/components/schemas/LoginResponse'
+ *       400:
+ *         description: 잘못된 요청 (사용자명 또는 비밀번호 누락)
+ *         content:
+ *           application/json:
+ *             schema:
+ *               $ref: '#/components/schemas/ErrorResponse'
+ *       401:
+ *         description: 인증 실패 (잘못된 사용자명 또는 비밀번호)
+ *         content:
+ *           application/json:
+ *             schema:
+ *               $ref: '#/components/schemas/ErrorResponse'
+ *       429:
+ *         description: 너무 많은 로그인 시도
+ *         content:
+ *           application/json:
+ *             schema:
+ *               $ref: '#/components/schemas/ErrorResponse'
+ *       500:
+ *         description: 서버 내부 오류
+ *         content:
+ *           application/json:
+ *             schema:
+ *               $ref: '#/components/schemas/ErrorResponse'
  */
 router.post('/login', authController.login);
 
diff --git a/api.hyungi.net/routes/workerRoutes.js b/api.hyungi.net/routes/workerRoutes.js
index 72324ef..15d5f0e 100644
--- a/api.hyungi.net/routes/workerRoutes.js
+++ b/api.hyungi.net/routes/workerRoutes.js
@@ -1,20 +1,228 @@
+/**
+ * @swagger
+ * tags:
+ *   name: Workers
+ *   description: 작업자 관리 API
+ */
+
 const express = require('express');
 const router = express.Router();
 const workerController = require('../controllers/workerController');
 
-// 작업자 생성
+/**
+ * @swagger
+ * /api/workers:
+ *   post:
+ *     tags: [Workers]
+ *     summary: 작업자 생성
+ *     description: 새로운 작업자를 생성합니다.
+ *     security:
+ *       - bearerAuth: []
+ *     requestBody:
+ *       required: true
+ *       content:
+ *         application/json:
+ *           schema:
+ *             type: object
+ *             required:
+ *               - worker_name
+ *             properties:
+ *               worker_name:
+ *                 type: string
+ *                 example: "김철수"
+ *               position:
+ *                 type: string
+ *                 example: "용접공"
+ *               department:
+ *                 type: string
+ *                 example: "생산부"
+ *               phone:
+ *                 type: string
+ *                 example: "010-1234-5678"
+ *               email:
+ *                 type: string
+ *                 format: email
+ *                 example: "worker@technicalkorea.com"
+ *     responses:
+ *       201:
+ *         description: 작업자 생성 성공
+ *         content:
+ *           application/json:
+ *             schema:
+ *               $ref: '#/components/schemas/SuccessResponse'
+ *       400:
+ *         description: 잘못된 요청
+ *       401:
+ *         description: 인증 필요
+ *       500:
+ *         description: 서버 오류
+ *   get:
+ *     tags: [Workers]
+ *     summary: 전체 작업자 조회
+ *     description: 모든 작업자 목록을 조회합니다.
+ *     security:
+ *       - bearerAuth: []
+ *     responses:
+ *       200:
+ *         description: 작업자 목록 조회 성공
+ *         content:
+ *           application/json:
+ *             schema:
+ *               type: object
+ *               properties:
+ *                 success:
+ *                   type: boolean
+ *                   example: true
+ *                 message:
+ *                   type: string
+ *                   example: "작업자 목록 조회 성공"
+ *                 data:
+ *                   type: array
+ *                   items:
+ *                     $ref: '#/components/schemas/Worker'
+ *                 meta:
+ *                   type: object
+ *                   properties:
+ *                     count:
+ *                       type: integer
+ *                       example: 10
+ *       401:
+ *         description: 인증 필요
+ *       500:
+ *         description: 서버 오류
+ */
 router.post('/', workerController.createWorker);
-
-// 전체 작업자 조회
 router.get('/', workerController.getAllWorkers);
 
-// 특정 작업자 조회
+/**
+ * @swagger
+ * /api/workers/{worker_id}:
+ *   get:
+ *     tags: [Workers]
+ *     summary: 특정 작업자 조회
+ *     description: ID로 특정 작업자 정보를 조회합니다.
+ *     security:
+ *       - bearerAuth: []
+ *     parameters:
+ *       - in: path
+ *         name: worker_id
+ *         required: true
+ *         schema:
+ *           type: integer
+ *         description: 작업자 ID
+ *     responses:
+ *       200:
+ *         description: 작업자 조회 성공
+ *         content:
+ *           application/json:
+ *             schema:
+ *               type: object
+ *               properties:
+ *                 success:
+ *                   type: boolean
+ *                   example: true
+ *                 message:
+ *                   type: string
+ *                   example: "작업자 조회 성공"
+ *                 data:
+ *                   $ref: '#/components/schemas/Worker'
+ *       400:
+ *         description: 잘못된 작업자 ID
+ *       401:
+ *         description: 인증 필요
+ *       404:
+ *         description: 작업자를 찾을 수 없음
+ *       500:
+ *         description: 서버 오류
+ *   put:
+ *     tags: [Workers]
+ *     summary: 작업자 정보 수정
+ *     description: 작업자 정보를 수정합니다.
+ *     security:
+ *       - bearerAuth: []
+ *     parameters:
+ *       - in: path
+ *         name: worker_id
+ *         required: true
+ *         schema:
+ *           type: integer
+ *         description: 작업자 ID
+ *     requestBody:
+ *       required: true
+ *       content:
+ *         application/json:
+ *           schema:
+ *             type: object
+ *             properties:
+ *               worker_name:
+ *                 type: string
+ *                 example: "김철수"
+ *               position:
+ *                 type: string
+ *                 example: "용접공"
+ *               department:
+ *                 type: string
+ *                 example: "생산부"
+ *               phone:
+ *                 type: string
+ *                 example: "010-1234-5678"
+ *               email:
+ *                 type: string
+ *                 format: email
+ *                 example: "worker@technicalkorea.com"
+ *     responses:
+ *       200:
+ *         description: 작업자 수정 성공
+ *         content:
+ *           application/json:
+ *             schema:
+ *               $ref: '#/components/schemas/SuccessResponse'
+ *       400:
+ *         description: 잘못된 요청
+ *       401:
+ *         description: 인증 필요
+ *       404:
+ *         description: 작업자를 찾을 수 없음
+ *       500:
+ *         description: 서버 오류
+ *   delete:
+ *     tags: [Workers]
+ *     summary: 작업자 삭제
+ *     description: 작업자를 삭제합니다.
+ *     security:
+ *       - bearerAuth: []
+ *     parameters:
+ *       - in: path
+ *         name: worker_id
+ *         required: true
+ *         schema:
+ *           type: integer
+ *         description: 작업자 ID
+ *     responses:
+ *       200:
+ *         description: 작업자 삭제 성공
+ *         content:
+ *           application/json:
+ *             schema:
+ *               type: object
+ *               properties:
+ *                 success:
+ *                   type: boolean
+ *                   example: true
+ *                 message:
+ *                   type: string
+ *                   example: "작업자가 성공적으로 삭제되었습니다."
+ *       400:
+ *         description: 잘못된 작업자 ID
+ *       401:
+ *         description: 인증 필요
+ *       404:
+ *         description: 작업자를 찾을 수 없음
+ *       500:
+ *         description: 서버 오류
+ */
 router.get('/:worker_id', workerController.getWorkerById);
-
-// 작업자 업데이트
 router.put('/:worker_id', workerController.updateWorker);
-
-// 작업자 삭제
 router.delete('/:worker_id', workerController.removeWorker);
 
 module.exports = router;
\ No newline at end of file