diff --git a/M01_MasterData/M01_MasterData_Store_Cache.py b/M01_MasterData/M01_MasterData_Store_Cache.py
index c704de769..7de46444a 100644
--- a/M01_MasterData/M01_MasterData_Store_Cache.py
+++ b/M01_MasterData/M01_MasterData_Store_Cache.py
@@ -16,12 +16,17 @@ import threading
 from decimal import Decimal
 from pathlib import Path
 
+from config import config_system
+
 SCRIPTS = Path(__file__).resolve().parents[1] / "resources/master_data/scripts"
 sys.path.insert(0, str(SCRIPTS))
 
 import check_master as cm  # noqa: E402
 import master_material as mm  # noqa: E402  (자재품목 테이블ID — 재료 고르기는 그 묶음을 훑음)
 
+# 구조물 일위대가 문서(M02 `labor/<열>.json` · 39-1b) 시스템 층 — storage 층은 따로 · 시험이 바꿈
+LABOR_ROOTS: tuple[Path, ...] = (config_system.PROJECT_ROOT / "resources" / "master_template",)
+
 _FRESH = threading.RLock()
 _READ: dict[str, tuple[tuple, dict]] = {}  # 파일 이름 → (자국, 읽은 내용)
 _INDEX: dict = {}  # 폴더 · 자국 · files · whole
@@ -217,7 +222,36 @@ def check_saved(files: dict, changed: list[str], book: dict, narrowed=None) -> l
     out += cm.check_logics(files, whole, book, narrowed and narrowed[:2])
     if narrowed and narrowed[2]:  # 요소·표를 고쳤으면 연결 · 준용도 봄(로직 좁힘과 따로)
         out += cm.check_links(whole)
-    return out + cm.mcb.check_all(files, whole)
+    return out + cm.mcb.check_all(files, whole) + labor_errors(whole)
+
+
+def _labor_files() -> list[Path]:
+    base = Path(config_system.STORAGE_BASE_DIR)
+    roots = [*LABOR_ROOTS]
+    if base.is_dir():
+        roots += [*base.glob("*/templates"), *base.glob("*/*/templates")]  # 프로젝트 빼고
+    return [p for root in roots for p in sorted((root / "labor").glob("[!._]*.json"))]
+
+
+def labor_errors(whole) -> list[str]:
+    """모든 층 구조물 일위대가가 담은 로직이 마스터에 없으면 한 줄씩 — 쓰는 로직 지우기를 막음
+    (실무문서 = 마스터 조합은 `check_all` 몫)."""
+    out = []
+    for path in _labor_files():
+        try:
+            doc = json.loads(path.read_bytes())
+        except (OSError, ValueError):
+            continue
+        for one in doc.get("담은로직") or []:
+            code = str(one.get("로직") or "") if isinstance(one, dict) else ""
+            try:
+                whole.logic(code)
+            except cm.mf.FormulaError:
+                where = f"{path.parent.parent.name}/{path.stem}"
+                out.append(
+                    f"구조물 일위대가 {where} 이 담은 로직 「{code}」 이 없음 — 쓰는 로직은 못 지움"
+                )
+    return out
 
 
 def warm(folder: Path) -> threading.Thread:
diff --git a/resources/tester/test_m02_labor_doc.py b/resources/tester/test_m02_labor_doc.py
index d4ae1e3f8..9290a00b8 100644
--- a/resources/tester/test_m02_labor_doc.py
+++ b/resources/tester/test_m02_labor_doc.py
@@ -211,3 +211,30 @@ def test_길_틀린_문서_400_없는_열_404_남의_개인_층_403(client):
     assert client.post(url.format("system", "없는열"), json={}).status_code == 404
     other = client.post(url.format("personal", "rv") + "?owner=7/99", json={})
     assert other.status_code == 403
+
+
+def test_로직_지우기_검사는_모든_층_일위대가를_봄(tmp_path, monkeypatch):
+    from config import config_system
+    from M01_MasterData import M01_MasterData_Store_Cache as cache
+
+    system, storage = tmp_path / "system", tmp_path / "storage"
+    for folder, code in (
+        (system / "labor", STONE),
+        (storage / "7" / "templates" / "labor", TEN),  # 회사 층
+        (storage / "7" / "42" / "templates" / "labor", STONE),  # 개인 층
+        (storage / "7" / "42" / "p1" / "templates" / "labor", STONE),  # 프로젝트 — 안 봄
+    ):
+        folder.mkdir(parents=True)
+        body = {"담은로직": [{"로직": code}]}
+        (folder / "a.json").write_text(json.dumps(body), encoding="utf-8")
+    monkeypatch.setattr(cache, "LABOR_ROOTS", (system,))
+    monkeypatch.setattr(config_system, "STORAGE_BASE_DIR", str(storage))
+
+    class Gone:  # STONE 을 지운 마스터
+        def logic(self, code):
+            if code == STONE:
+                raise cache.cm.mf.FormulaError("없음")
+
+    got = cache.labor_errors(Gone())
+    assert len(got) == 2 and all(STONE in x for x in got)
+    assert any("system/a" in x for x in got) and any("templates/a" in x for x in got)