diff --git a/src/test/app/(protected)/workorders/wo-table-unscheduled-highlight.test.tsx b/src/test/app/(protected)/workorders/wo-table-unscheduled-highlight.test.tsx
new file mode 100644
index 00000000..011c95a6
--- /dev/null
+++ b/src/test/app/(protected)/workorders/wo-table-unscheduled-highlight.test.tsx
@@ -0,0 +1,118 @@
+import { renderWithProviders } from "@/test/test-utils";
+import { screen } from "@testing-library/react";
+import { describe, expect, it, vi } from "vitest";
+import { WoTableBody } from "@/app/(protected)/workorders/_components/list/table/wo-table-body";
+import { WoTableRowCells } from "@/app/(protected)/workorders/_components/list/table/wo-table-row-cells";
+import type { WoTableRowHandlers } from "@/app/(protected)/workorders/_components/list/table/wo-table-row";
+import type { ReturnTypeOfUseWorkOrdersTableData } from "@/app/(protected)/workorders/_components/list/table/wo-table-types";
+import type { WorkOrderTableRow } from "@/domain/work-orders/types/work-order-table-row";
+
+const HIGHLIGHT_BOX_SHADOW = "0 0 0 2px var(--color-accent)";
+
+const unscheduledRow: WorkOrderTableRow = {
+  id: 42,
+  woNumber: "WO-42",
+  site: "CHI-1042",
+  type: "PM",
+  dispatcherId: "u1",
+  dispatcherName: "Test Dispatcher",
+  scheduledOn: "",
+  targetWeek: "",
+  dayGroup: "",
+  dayLabel: "",
+  location: "Chicago Loop",
+  locationId: "mock-loc-1",
+  pm: "HVAC — Quarterly PM",
+  serviceNotes: "",
+  extraServices: [],
+  vendorId: "",
+  company: "",
+  tech: "",
+  techPhone: "",
+  apptStart: "",
+  apptEnd: "",
+  apptTime: "",
+  status: "Pending",
+  docStatus: "No",
+  pocName: "",
+  pocPhone: "",
+  pocNotes: "",
+  dueDate: "2026-07-15",
+  rescheduleCount: 0,
+  carriedOver: 0,
+  originalWeek: "",
+  originalDate: "",
+  isPastDue: false,
+  scheduleWeekOnly: false,
+  mediaCount: 0,
+  title: "",
+  priority: "",
+  primaryDispatchId: null,
+  rowVersion: "",
+  dispatchRowVersion: "",
+  flagColor: null,
+};
+
+const handlers: WoTableRowHandlers = {
+  onRowClick: vi.fn(),
+  onView: vi.fn(),
+  onEdit: vi.fn(),
+  onOpenMedia: vi.fn(),
+  onPatch: vi.fn(),
+  onScheduleDate: vi.fn(),
+  onScheduleWeek: vi.fn(),
+  onOpenSlideOver: vi.fn(),
+  onReorder: vi.fn(),
+  onDragStart: vi.fn(),
+  onDragOver: vi.fn(),
+  onDrop: vi.fn(),
+  onDragEnd: vi.fn(),
+};
+
+/** Mirrors WoTable.renderRow: body `true` → Schedule On only. */
+function renderUnscheduledHarness() {
+  const tableData = {
+    advActive: false,
+    unscheduled: [unscheduledRow],
+    unschedOpen: true,
+    draftDayKey: null,
+    displayGroups: [],
+    todayKey: null,
+    startDayDraft: vi.fn(),
+    setUnschedOpen: vi.fn(),
+  } as unknown as ReturnTypeOfUseWorkOrdersTableData;
+
+  const renderRow = (row: WorkOrderTableRow, forceScheduleHighlight = false) => (
+    <tr key={String(row.id)}>
+      <WoTableRowCells
+        row={row}
+        allRows={[row]}
+        users={[]}
+        sites={[]}
+        forceScheduleHighlight={forceScheduleHighlight}
+        forceDueDateHighlight={false}
+        handlers={handlers}
+        onPatchRow={vi.fn()}
+      />
+    </tr>
+  );
+
+  return renderWithProviders(
+    <table>
+      <WoTableBody tableData={tableData} renderRow={renderRow} renderInlineRow={() => null} />
+    </table>,
+    { withAuth: false },
+  );
+}
+
+describe("WoTableBody unscheduled Schedule On highlight (SH-165)", () => {
+  it("force-highlights Schedule On for Unscheduled rows, not Due Date", () => {
+    renderUnscheduledHarness();
+
+    const scheduleOn = screen.getByRole("button", { name: /^—$/ });
+    const dueDate = screen.getByRole("button", { name: /07-15/ });
+
+    expect(scheduleOn).toHaveStyle({ boxShadow: HIGHLIGHT_BOX_SHADOW });
+    expect(dueDate).not.toHaveStyle({ boxShadow: HIGHLIGHT_BOX_SHADOW });
+  });
+});