diff --git a/frontend/components/admin/department/DepartmentManagement.tsx b/frontend/components/admin/department/DepartmentManagement.tsx
index 989b6084..b2916374 100644
--- a/frontend/components/admin/department/DepartmentManagement.tsx
+++ b/frontend/components/admin/department/DepartmentManagement.tsx
@@ -48,8 +48,8 @@ export function DepartmentManagement({ companyCode }: DepartmentManagementProps)
 
       {/* 좌우 레이아웃 (데스크톱) */}
       <div className="hidden h-full gap-6 lg:flex">
-        {/* 좌측: 부서 구조 (30%) */}
-        <div className="w-[30%] border-r pr-6">
+        {/* 좌측: 부서 구조 (20%) */}
+        <div className="w-[20%] border-r pr-6">
           <DepartmentStructure
             companyCode={companyCode}
             selectedDepartment={selectedDepartment}
@@ -57,8 +57,8 @@ export function DepartmentManagement({ companyCode }: DepartmentManagementProps)
           />
         </div>
 
-        {/* 우측: 부서 인원 (70%) */}
-        <div className="w-[70%] pl-0">
+        {/* 우측: 부서 인원 (80%) */}
+        <div className="w-[80%] pl-0">
           <DepartmentMembers
             companyCode={companyCode}
             selectedDepartment={selectedDepartment}