diff --git a/database/migrations/2025_08_13_134340_add_foreign_key_work_group_to_lines.php b/database/migrations/2025_08_13_134340_add_foreign_key_work_group_to_lines.php
new file mode 100644
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+++ b/database/migrations/2025_08_13_134340_add_foreign_key_work_group_to_lines.php
@@ -0,0 +1,63 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        $sql = <<<'SQL'
+            ALTER TABLE lines
+            ADD COLUMN no_of_operation INT NOT NULL DEFAULT 0,
+
+            ADD COLUMN work_group1_id BIGINT DEFAULT NULL,
+            ADD COLUMN work_group2_id BIGINT DEFAULT NULL,
+            ADD COLUMN work_group3_id BIGINT DEFAULT NULL,
+            ADD COLUMN work_group4_id BIGINT DEFAULT NULL,
+            ADD COLUMN work_group5_id BIGINT DEFAULT NULL,
+            ADD COLUMN work_group6_id BIGINT DEFAULT NULL,
+            ADD COLUMN work_group7_id BIGINT DEFAULT NULL,
+            ADD COLUMN work_group8_id BIGINT DEFAULT NULL,
+            ADD COLUMN work_group9_id BIGINT DEFAULT NULL,
+            ADD COLUMN work_group10_id BIGINT DEFAULT NULL,
+            ADD CONSTRAINT lines_work_group1_id_fkey
+            FOREIGN KEY (work_group1_id) REFERENCES work_group_masters(id),
+            ADD CONSTRAINT lines_work_group2_id_fkey
+            FOREIGN KEY (work_group2_id) REFERENCES work_group_masters(id),
+            ADD CONSTRAINT lines_work_group3_id_fkey
+            FOREIGN KEY (work_group3_id) REFERENCES work_group_masters(id),
+            ADD CONSTRAINT lines_work_group4_id_fkey
+            FOREIGN KEY (work_group4_id) REFERENCES work_group_masters(id),
+            ADD CONSTRAINT lines_work_group5_id_fkey
+            FOREIGN KEY (work_group5_id) REFERENCES work_group_masters(id),
+            ADD CONSTRAINT lines_work_group6_id_fkey
+            FOREIGN KEY (work_group6_id) REFERENCES work_group_masters(id),
+            ADD CONSTRAINT lines_work_group7_id_fkey
+            FOREIGN KEY (work_group7_id) REFERENCES work_group_masters(id),
+            ADD CONSTRAINT lines_work_group8_id_fkey
+            FOREIGN KEY (work_group8_id) REFERENCES work_group_masters(id),
+            ADD CONSTRAINT lines_work_group9_id_fkey
+            FOREIGN KEY (work_group9_id) REFERENCES work_group_masters(id),
+            ADD CONSTRAINT lines_work_group10_id_fkey
+            FOREIGN KEY (work_group10_id) REFERENCES work_group_masters(id);
+
+        SQL;
+
+        DB::statement($sql);
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        // Schema::table('lines', function (Blueprint $table) {
+        //     //
+        // });
+    }
+};