diff --git a/database/migrations/2025_01_08_100000_add_tenant_id_to_work_order_sub_tables.php b/database/migrations/2025_12_26_100400_add_tenant_id_to_work_order_sub_tables.php
similarity index 100%
rename from database/migrations/2025_01_08_100000_add_tenant_id_to_work_order_sub_tables.php
rename to database/migrations/2025_12_26_100400_add_tenant_id_to_work_order_sub_tables.php
diff --git a/database/migrations/2025_01_09_100000_create_work_order_assignees_table.php b/database/migrations/2025_12_26_100600_create_work_order_assignees_table.php
similarity index 100%
rename from database/migrations/2025_01_09_100000_create_work_order_assignees_table.php
rename to database/migrations/2025_12_26_100600_create_work_order_assignees_table.php
diff --git a/database/migrations/2025_01_09_100000_change_work_orders_process_type_to_process_id.php b/database/migrations/2025_12_26_183200_change_work_orders_process_type_to_process_id.php
similarity index 81%
rename from database/migrations/2025_01_09_100000_change_work_orders_process_type_to_process_id.php
rename to database/migrations/2025_12_26_183200_change_work_orders_process_type_to_process_id.php
index 14ede0c..fbf1593 100644
--- a/database/migrations/2025_01_09_100000_change_work_orders_process_type_to_process_id.php
+++ b/database/migrations/2025_12_26_183200_change_work_orders_process_type_to_process_id.php
@@ -24,29 +24,43 @@ public function up(): void
         // 1. 절곡 공정이 없으면 각 테넌트별로 생성
         $this->ensureBendingProcessExists();
 
-        // 2. process_id 컬럼 추가 (nullable로 먼저 생성)
-        Schema::table('work_orders', function (Blueprint $table) {
-            $table->unsignedBigInteger('process_id')
-                ->nullable()
-                ->after('sales_order_id')
-                ->comment('공정 ID (FK → processes.id)');
-        });
+        // 2. process_id 컬럼 추가 (이미 존재하면 스킵)
+        if (!Schema::hasColumn('work_orders', 'process_id')) {
+            Schema::table('work_orders', function (Blueprint $table) {
+                $table->unsignedBigInteger('process_id')
+                    ->nullable()
+                    ->after('sales_order_id')
+                    ->comment('공정 ID (FK → processes.id)');
+            });
+        }
 
         // 3. 기존 process_type 데이터를 process_id로 마이그레이션
         $this->migrateProcessTypeToProcessId();
 
-        // 4. process_id에 FK 제약 추가 및 NOT NULL로 변경
-        Schema::table('work_orders', function (Blueprint $table) {
-            $table->foreign('process_id')
-                ->references('id')
-                ->on('processes')
-                ->onDelete('restrict');
-        });
+        // 4. process_id에 FK 제약 추가 (이미 존재하면 스킵)
+        $hasFk = DB::select("
+            SELECT COUNT(*) as cnt FROM information_schema.KEY_COLUMN_USAGE
+            WHERE TABLE_SCHEMA = DATABASE()
+            AND TABLE_NAME = 'work_orders'
+            AND COLUMN_NAME = 'process_id'
+            AND REFERENCED_TABLE_NAME IS NOT NULL
+        ")[0]->cnt > 0;
 
-        // 5. 기존 process_type 컬럼 제거
-        Schema::table('work_orders', function (Blueprint $table) {
-            $table->dropColumn('process_type');
-        });
+        if (!$hasFk) {
+            Schema::table('work_orders', function (Blueprint $table) {
+                $table->foreign('process_id')
+                    ->references('id')
+                    ->on('processes')
+                    ->onDelete('restrict');
+            });
+        }
+
+        // 5. 기존 process_type 컬럼 제거 (존재하면 제거)
+        if (Schema::hasColumn('work_orders', 'process_type')) {
+            Schema::table('work_orders', function (Blueprint $table) {
+                $table->dropColumn('process_type');
+            });
+        }
     }
 
     public function down(): void