diff --git a/fems-api/src/services/auth.service.js b/fems-api/src/services/auth.service.js
index 7efdb18..73cd7e6 100644
--- a/fems-api/src/services/auth.service.js
+++ b/fems-api/src/services/auth.service.js
@@ -38,7 +38,7 @@ class AuthService {
       include: [
         {
           model: Company,
-          attributes: ["id", "name", "businessNumber"],
+          attributes: ["id", "name", "businessNumber", "contractEndDate"],
         },
         {
           model: Branch,
@@ -134,7 +134,7 @@ class AuthService {
       include: [
         {
           model: Company,
-          attributes: ["id", "name", "businessNumber"],
+          attributes: ["id", "name", "businessNumber", "contractEndDate"],
           where: { isActive: true }, // 활성화된 회사만
         },
         {
@@ -170,10 +170,14 @@ class AuthService {
 
     // 8. 응답 데이터 구성
     const userData = user.toJSON();
+    const companyData = userData.Company || {};
     delete userData.Roles;
 
     const userInfo = {
       ...userData,
+      companyName: companyData.name,
+      businessNumber: companyData.businessNumber,
+      contractEndDate: companyData.contractEndDate,
       permissions,
       isEdgeLogin: true, // Edge 로그인 여부 표시
     };
@@ -227,18 +231,48 @@ class AuthService {
     }
   }
 
+  // _generateToken(user) {
+  //   return jwt.sign(
+  //     {
+  //       id: user.id,
+  //       role: user.role,
+  //       companyId: user.companyId,
+  //       companyName: user.Company.name,
+  //       businessNumber: user.Company.businessNumber,
+  //       contractEndDate: user.Company.contractEndDate,
+  //       branchId: user.branchId,
+  //       permissions: user.permissions,
+  //     },
+  //     config.jwt.secret,
+  //     { expiresIn: config.jwt.expiresIn }
+  //   );
+  // }
   _generateToken(user) {
-    return jwt.sign(
-      {
-        id: user.id,
-        role: user.role,
-        companyId: user.companyId,
-        branchId: user.branchId,
-        permissions: user.permissions,
-      },
-      config.jwt.secret,
-      { expiresIn: config.jwt.expiresIn }
-    );
+    const payload = {
+      id: user.id,
+      role: user.role,
+      companyId: user.companyId,
+      branchId: user.branchId,
+      permissions: user.permissions,
+    };
+
+    // 회사 관련 정보 추가 (Company 객체 또는 평탄화된 속성에서 가져옴)
+    if (user.Company) {
+      payload.companyName = user.Company.name;
+      payload.businessNumber = user.Company.businessNumber;
+      payload.contractEndDate = user.Company.contractEndDate;
+    } else {
+      // 평탄화된 데이터에서 가져옴
+      payload.companyName = user.companyName;
+      payload.businessNumber = user.businessNumber;
+      payload.contractEndDate = user.contractEndDate;
+    }
+
+    logger.debug("Token payload:", payload); // 디버깅을 위한 로그 추가
+
+    return jwt.sign(payload, config.jwt.secret, {
+      expiresIn: config.jwt.expiresIn,
+    });
   }
 }
 
diff --git a/fems-api/src/utils/createInitialAdmin.js b/fems-api/src/utils/createInitialAdmin.js
index 64f1828..53391eb 100644
--- a/fems-api/src/utils/createInitialAdmin.js
+++ b/fems-api/src/utils/createInitialAdmin.js
@@ -13,15 +13,16 @@ async function createInitialAdmin() {
   try {
     // 1. 관리자 회사 생성 또는 조회
     let adminCompany = await Company.findOne({
-      where: { businessNumber: "000-00-00000" },
+      where: { businessNumber: 4398702852 },
     });
 
     let adminBranch; // Branch 변수 선언
+    const businessNumber = parseInt("439-78-02852".replace(/-/g, ""), 10);
 
     if (!adminCompany) {
       adminCompany = await Company.create({
         name: "FEMS 관리자",
-        businessNumber: 4397802852,
+        businessNumber,
         address: "서울시 강남구",
         tel: "02-0000-0000",
         email: "admin@fems.com",