diff --git a/e2e/__screenshots__/work-orders/work-orders.visual.spec.ts/wo-empty.png b/e2e/__screenshots__/work-orders/work-orders.visual.spec.ts/wo-empty.png
index e64d4c12..b21a8ded 100644
Binary files a/e2e/__screenshots__/work-orders/work-orders.visual.spec.ts/wo-empty.png and b/e2e/__screenshots__/work-orders/work-orders.visual.spec.ts/wo-empty.png differ
diff --git a/src/app/(protected)/workorders/_components/list/work-orders-list-header.tsx b/src/app/(protected)/workorders/_components/list/work-orders-list-header.tsx
index 8208d7de..3f52ea0f 100644
--- a/src/app/(protected)/workorders/_components/list/work-orders-list-header.tsx
+++ b/src/app/(protected)/workorders/_components/list/work-orders-list-header.tsx
@@ -5,31 +5,49 @@ import { ToolbarButton } from "@/components/ui/toolbar-button";
 
 type WorkOrdersListHeaderProps = {
   search: string;
+  /** Compact label of the active board week (e.g. "5/4–5/8"). */
+  weekLabel: string;
   onSearchChange: (value: string) => void;
   /** Omit until Advanced Search slice mounts the sheet. */
   onOpenAdvancedFilters?: () => void;
   /** Omit until wizard shell slice mounts New WO. */
   onNewWorkOrder?: () => void;
   activeFilterCount: number;
+  /** True while Advanced Filters are applied; results are global and the keyword box is inert. */
+  advancedFiltersActive?: boolean;
   isFetching?: boolean;
 };
 
 export function WorkOrdersListHeader({
   search,
+  weekLabel,
   onSearchChange,
   onOpenAdvancedFilters,
   onNewWorkOrder,
   activeFilterCount,
+  advancedFiltersActive = false,
   isFetching = false,
 }: WorkOrdersListHeaderProps) {
   return (
     <>
-      <SearchInput
-        value={search}
-        onChange={onSearchChange}
-        placeholder="Search this week…"
-        aria-label="Search work orders"
-      />
+      <div className="relative">
+        <SearchInput
+          value={search}
+          onChange={onSearchChange}
+          placeholder="Search this week…"
+          aria-label="Search work orders"
+        />
+        {/* Keyword search is scoped to the active week; make that scope visible. */}
+        {!advancedFiltersActive && search.trim() !== "" && Boolean(weekLabel) && (
+          <span
+            role="status"
+            className="absolute left-0 whitespace-nowrap text-(length:--text-xs) text-muted-foreground"
+            style={{ top: "calc(100% + 4px)" }}
+          >
+            Searching within {weekLabel}
+          </span>
+        )}
+      </div>
 
       {Boolean(onOpenAdvancedFilters) && (
         <ToolbarButton
diff --git a/src/app/(protected)/workorders/_hooks/use-work-orders-board-source.ts b/src/app/(protected)/workorders/_hooks/use-work-orders-board-source.ts
index 7522bb47..cbc1da83 100644
--- a/src/app/(protected)/workorders/_hooks/use-work-orders-board-source.ts
+++ b/src/app/(protected)/workorders/_hooks/use-work-orders-board-source.ts
@@ -33,7 +33,8 @@ export function useWorkOrdersBoardSource(filters: FiltersReturn): WorkOrdersBoar
     () =>
       buildResolvedBoardSearchParams({
         advApplied: filters.advApplied,
-        search: filters.search,
+        // Advanced Filters are global by design; the week-scoped keyword box has no effect.
+        search: "",
         page: filters.page,
         pageSize: filters.pageSize,
         sortBy: filters.sortBy,
@@ -43,7 +44,6 @@ export function useWorkOrdersBoardSource(filters: FiltersReturn): WorkOrdersBoar
       }),
     [
       filters.advApplied,
-      filters.search,
       filters.page,
       filters.pageSize,
       filters.sortBy,
diff --git a/src/app/(protected)/workorders/index.tsx b/src/app/(protected)/workorders/index.tsx
index 571251cb..e12e040d 100644
--- a/src/app/(protected)/workorders/index.tsx
+++ b/src/app/(protected)/workorders/index.tsx
@@ -43,10 +43,12 @@ export default function WorkOrdersListPage() {
         actions={
           <WorkOrdersListHeader
             search={filters.search}
+            weekLabel={filters.weekLabel}
             onSearchChange={filters.handleSearchChange}
             onOpenAdvancedFilters={() => filters.setAdvOpen(true)}
             onNewWorkOrder={() => page.setWizardOpen(true)}
             activeFilterCount={filters.activeFilterCount}
+            advancedFiltersActive={filters.advApplied != null}
             isFetching={tableData.isFetching && !tableData.isLoading}
           />
         }
diff --git a/src/test/app/(protected)/workorders/work-orders-board-core-affordances.test.tsx b/src/test/app/(protected)/workorders/work-orders-board-core-affordances.test.tsx
index c3fb07b9..7e4df369 100644
--- a/src/test/app/(protected)/workorders/work-orders-board-core-affordances.test.tsx
+++ b/src/test/app/(protected)/workorders/work-orders-board-core-affordances.test.tsx
@@ -189,7 +189,12 @@ vi.mock("@/app/(protected)/workorders/_components/list/table/wo-table", () => ({
 describe("WorkOrdersListHeader slice affordances", () => {
   it("hides New WO and Advanced Filters when callbacks are omitted", () => {
     renderWithProviders(
-      <WorkOrdersListHeader search="" onSearchChange={vi.fn()} activeFilterCount={0} />,
+      <WorkOrdersListHeader
+        search=""
+        weekLabel="5/4–5/8"
+        onSearchChange={vi.fn()}
+        activeFilterCount={0}
+      />,
       { withAuth: false },
     );
 
@@ -202,6 +207,7 @@ describe("WorkOrdersListHeader slice affordances", () => {
     renderWithProviders(
       <WorkOrdersListHeader
         search=""
+        weekLabel="5/4–5/8"
         onSearchChange={vi.fn()}
         onNewWorkOrder={vi.fn()}
         onOpenAdvancedFilters={vi.fn()}
diff --git a/src/test/app/(protected)/workorders/work-orders-search-scope.test.tsx b/src/test/app/(protected)/workorders/work-orders-search-scope.test.tsx
new file mode 100644
index 00000000..dbf95538
--- /dev/null
+++ b/src/test/app/(protected)/workorders/work-orders-search-scope.test.tsx
@@ -0,0 +1,130 @@
+import { act, renderHook, screen, waitFor } from "@testing-library/react";
+import { QueryClientProvider } from "@tanstack/react-query";
+import type { ReactNode } from "react";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import { EMPTY_ADVANCED_FILTERS } from "@/domain/work-orders/types/work-order-advanced-filters";
+import { createTestQueryClient, renderWithProviders } from "@/test/test-utils";
+
+const { searchBoard, getBoard, emptyList } = vi.hoisted(() => ({
+  searchBoard: vi.fn(),
+  getBoard: vi.fn(),
+  emptyList: [] as const,
+}));
+
+vi.mock("@/hooks/use-debounce", () => ({
+  useDebounce: <T,>(value: T) => value,
+}));
+
+vi.mock("@/domain/work-orders/api/work-orders-api", () => ({
+  workOrdersApi: {
+    searchBoard: (...args: unknown[]) => searchBoard(...args),
+    getBoard: (...args: unknown[]) => getBoard(...args),
+  },
+}));
+
+vi.mock("@/domain/work-orders/use-cases/use-work-order-detail", () => ({
+  useWorkOrderLocations: () => ({ data: emptyList }),
+  useWorkOrderVendors: () => ({ data: emptyList }),
+}));
+
+import { WorkOrdersListHeader } from "@/app/(protected)/workorders/_components/list/work-orders-list-header";
+import { useWorkOrdersBoardSource } from "@/app/(protected)/workorders/_hooks/use-work-orders-board-source";
+import { useWorkOrdersListFilters } from "@/app/(protected)/workorders/_hooks/use-work-orders-list-filters";
+
+const EMPTY_RESULT = { items: [], totalCount: 0, page: 0, pageSize: 25 };
+
+function useBoardWithFilters() {
+  const filters = useWorkOrdersListFilters();
+  useWorkOrdersBoardSource(filters);
+  return filters;
+}
+
+function renderBoardSource() {
+  const client = createTestQueryClient();
+  const wrapper = ({ children }: { children: ReactNode }) => (
+    <QueryClientProvider client={client}>{children}</QueryClientProvider>
+  );
+  return renderHook(() => useBoardWithFilters(), { wrapper });
+}
+
+describe("keyword search scope indicator", () => {
+  it("shows no scope badge while the search box is empty", () => {
+    renderWithProviders(
+      <WorkOrdersListHeader
+        search=""
+        weekLabel="5/4–5/8"
+        onSearchChange={vi.fn()}
+        activeFilterCount={0}
+      />,
+      { withAuth: false },
+    );
+
+    expect(screen.queryByText(/searching within/i)).not.toBeInTheDocument();
+  });
+
+  it("names the active week while a keyword is typed", () => {
+    renderWithProviders(
+      <WorkOrdersListHeader
+        search="hvac"
+        weekLabel="5/4–5/8"
+        onSearchChange={vi.fn()}
+        activeFilterCount={0}
+      />,
+      { withAuth: false },
+    );
+
+    expect(screen.getByText("Searching within 5/4–5/8")).toBeInTheDocument();
+  });
+
+  it("hides the scope label while Advanced Filters are active", () => {
+    renderWithProviders(
+      <WorkOrdersListHeader
+        search="hvac"
+        weekLabel="5/4–5/8"
+        onSearchChange={vi.fn()}
+        activeFilterCount={1}
+        advancedFiltersActive
+      />,
+      { withAuth: false },
+    );
+
+    expect(screen.queryByText(/searching within/i)).not.toBeInTheDocument();
+  });
+});
+
+describe("keyword search vs Advanced Filters scope", () => {
+  beforeEach(() => {
+    searchBoard.mockReset().mockResolvedValue(EMPTY_RESULT);
+    getBoard.mockReset().mockResolvedValue(EMPTY_RESULT);
+  });
+
+  it("scopes keyword search to the active week", async () => {
+    const { result } = renderBoardSource();
+
+    act(() => {
+      result.current.setWeekMonday("2026-05-04");
+      result.current.handleSearchChange("hvac");
+    });
+
+    await waitFor(() =>
+      expect(getBoard).toHaveBeenCalledWith(
+        expect.objectContaining({ weekStart: "2026-05-04", weekEnd: "2026-05-08", search: "hvac" }),
+      ),
+    );
+    expect(searchBoard).not.toHaveBeenCalled();
+  });
+
+  it("keeps Advanced Filters global and ignores the week-scoped keyword", async () => {
+    const { result } = renderBoardSource();
+
+    act(() => {
+      result.current.handleSearchChange("hvac");
+      result.current.applyAdvancedFilters({ ...EMPTY_ADVANCED_FILTERS, rescheduled: true });
+    });
+
+    await waitFor(() => expect(searchBoard).toHaveBeenCalled());
+    const params = searchBoard.mock.lastCall?.[0] as Record<string, unknown>;
+    expect(params.search).toBeUndefined();
+    expect(params).not.toHaveProperty("weekStart");
+  });
+});