diff --git a/internal/database/migrations/20260127114036_change_type_data_column_id_daily_checklist.down.sql b/internal/database/migrations/20260127114036_change_type_data_column_id_daily_checklist.down.sql
new file mode 100644
index 00000000..dccb2ae4
--- /dev/null
+++ b/internal/database/migrations/20260127114036_change_type_data_column_id_daily_checklist.down.sql
@@ -0,0 +1,55 @@
+BEGIN;
+
+DO $$
+DECLARE
+  t text;
+  seq_name text;
+BEGIN
+  FOREACH t IN ARRAY ARRAY[
+    'daily_checklist_activity_task_assignments',
+    'daily_checklist_activity_tasks',
+    'daily_checklist_phases',
+    'daily_checklist_tasks',
+    'employee_kandangs',
+    'employees',
+    'phase_activities',
+    'phases'
+  ]
+  LOOP
+    -- Sequence name convention
+    seq_name := format('public.%I_id_seq', t);
+
+    -- 1) Drop default nextval (bigserial behavior)
+    EXECUTE format(
+      'ALTER TABLE public.%I ALTER COLUMN id DROP DEFAULT',
+      t
+    );
+
+    -- 2) Add IDENTITY back (BY DEFAULT is safer for rollback)
+    EXECUTE format(
+      'ALTER TABLE public.%I ALTER COLUMN id ADD GENERATED BY DEFAULT AS IDENTITY',
+      t
+    );
+
+    -- 3) Detach & optionally drop sequence (safe)
+    IF EXISTS (
+      SELECT 1 FROM pg_class
+      WHERE relkind = 'S'
+        AND relname = t || '_id_seq'
+    ) THEN
+      EXECUTE format(
+        'ALTER SEQUENCE %s OWNED BY NONE',
+        seq_name
+      );
+
+      -- Optional: drop sequence (comment if you want to keep it)
+      EXECUTE format(
+        'DROP SEQUENCE IF EXISTS %s',
+        seq_name
+      );
+    END IF;
+
+  END LOOP;
+END $$;
+
+COMMIT;
diff --git a/internal/database/migrations/20260127114036_change_type_data_column_id_daily_checklist.up.sql b/internal/database/migrations/20260127114036_change_type_data_column_id_daily_checklist.up.sql
new file mode 100644
index 00000000..9c7ce8f7
--- /dev/null
+++ b/internal/database/migrations/20260127114036_change_type_data_column_id_daily_checklist.up.sql
@@ -0,0 +1,58 @@
+BEGIN;
+
+DO $$
+DECLARE
+  t text;
+  seq_name text;
+  max_id bigint;
+BEGIN
+  FOREACH t IN ARRAY ARRAY[
+    'daily_checklist_activity_task_assignments',
+    'daily_checklist_activity_tasks',
+    'daily_checklist_phases',
+    'daily_checklist_tasks',
+    'employee_kandangs',
+    'employees',
+    'phase_activities',
+    'phases'
+  ]
+  LOOP
+    -- Sequence name convention: public.<table>_id_seq
+    seq_name := format('public.%I_id_seq', t);
+
+    -- Drop IDENTITY only if the column is identity (safe to re-run)
+    IF EXISTS (
+      SELECT 1
+      FROM information_schema.columns
+      WHERE table_schema = 'public'
+        AND table_name   = t
+        AND column_name  = 'id'
+        AND is_identity  = 'YES'
+    ) THEN
+      EXECUTE format('ALTER TABLE public.%I ALTER COLUMN id DROP IDENTITY', t);
+    END IF;
+
+    -- Ensure sequence exists
+    EXECUTE format('CREATE SEQUENCE IF NOT EXISTS %s', seq_name);
+
+    -- Set default like bigserial
+    EXECUTE format(
+      'ALTER TABLE public.%I ALTER COLUMN id SET DEFAULT nextval(''%s'')',
+      t, seq_name
+    );
+
+    -- Own the sequence by the column
+    EXECUTE format(
+      'ALTER SEQUENCE %s OWNED BY public.%I.id',
+      seq_name, t
+    );
+
+    -- Sync sequence to MAX(id) + 1 to avoid duplicate key
+    EXECUTE format('SELECT COALESCE(MAX(id), 0) FROM public.%I', t) INTO max_id;
+
+    EXECUTE format('SELECT setval(''%s'', $1, false)', seq_name)
+      USING (max_id + 1);
+  END LOOP;
+END $$;
+
+COMMIT;