diff --git a/system1-factory/api/controllers/proxyInputController.js b/system1-factory/api/controllers/proxyInputController.js
index 6dfa0bb..58ce45c 100644
--- a/system1-factory/api/controllers/proxyInputController.js
+++ b/system1-factory/api/controllers/proxyInputController.js
@@ -137,8 +137,8 @@ const ProxyInputController = {
           );
           if (existingDefects.length === 0) {
             await conn.query(
-              `INSERT INTO work_report_defects (report_id, defect_hours, note) VALUES (?, ?, '대리입력')`,
-              [reportId, defectHours]
+              `INSERT INTO work_report_defects (report_id, defect_hours, category_id, item_id, note) VALUES (?, ?, ?, ?, '대리입력')`,
+              [reportId, defectHours, entry.defect_category_id || null, entry.defect_item_id || null]
             );
             await conn.query(
               'UPDATE daily_work_reports SET error_hours = ?, work_status_id = 2 WHERE id = ?',
diff --git a/system1-factory/web/js/proxy-input.js b/system1-factory/web/js/proxy-input.js
index ad4613e..5ea6134 100644
--- a/system1-factory/web/js/proxy-input.js
+++ b/system1-factory/web/js/proxy-input.js
@@ -9,6 +9,7 @@ let allWorkers = [];
 let selectedIds = new Set();
 let projects = [];
 let workTypes = [];
+let defectCategories = []; // { category_id, category_name, items: [{ item_id, item_name }] }
 
 // ===== Init =====
 document.addEventListener('DOMContentLoaded', () => {
@@ -28,6 +29,18 @@ async function loadDropdownData() {
         ]);
         projects = (pRes.data || pRes || []).filter(p => p.is_active !== 0);
         workTypes = (wRes.data || wRes || []).map(w => ({ id: w.id || w.work_type_id, name: w.name || w.work_type_name, ...w }));
+
+        // 부적합 대분류/소분류 로드
+        const cRes = await window.apiCall('/work-issues/categories/type/nonconformity');
+        const cats = cRes.data || cRes || [];
+        for (const c of cats) {
+            const iRes = await window.apiCall('/work-issues/items/category/' + c.category_id);
+            defectCategories.push({
+                category_id: c.category_id,
+                category_name: c.category_name,
+                items: (iRes.data || iRes || [])
+            });
+        }
     } catch (e) { console.warn('드롭다운 로드 실패:', e); }
 }
 
@@ -174,6 +187,13 @@ async function saveAll() {
         return;
     }
 
+    const defectCategoryId = defect > 0 ? (parseInt(document.getElementById('bulkDefectCategory').value) || null) : null;
+    const defectItemId = defect > 0 ? (parseInt(document.getElementById('bulkDefectItem').value) || null) : null;
+    if (defect > 0 && !defectCategoryId) {
+        showToast('부적합 대분류를 선택하세요', 'error');
+        return;
+    }
+
     const btn = document.getElementById('saveBtn');
     btn.disabled = true;
     document.getElementById('saveBtnText').textContent = '저장 중...';
@@ -184,6 +204,8 @@ async function saveAll() {
         work_type_id: parseInt(wtypeId),
         work_hours: hours,
         defect_hours: defect,
+        defect_category_id: defectCategoryId,
+        defect_item_id: defectItemId,
         note: note,
         start_time: '08:00',
         end_time: '17:00',
@@ -213,4 +235,28 @@ async function saveAll() {
     document.getElementById('saveBtnText').textContent = '전체 저장';
 }
 
+// ===== Defect Category/Item =====
+function onDefectChange() {
+    const val = parseFloat(document.getElementById('bulkDefect').value) || 0;
+    const row = document.getElementById('defectCategoryRow');
+    if (val > 0) {
+        row.classList.remove('hidden');
+        const catSel = document.getElementById('bulkDefectCategory');
+        if (catSel.options.length <= 1) {
+            catSel.innerHTML = '<option value="">부적합 대분류 *</option>' +
+                defectCategories.map(c => `<option value="${c.category_id}">${esc(c.category_name)}</option>`).join('');
+        }
+    } else {
+        row.classList.add('hidden');
+    }
+}
+
+function onDefectCategoryChange() {
+    const catId = parseInt(document.getElementById('bulkDefectCategory').value);
+    const itemSel = document.getElementById('bulkDefectItem');
+    const cat = defectCategories.find(c => c.category_id === catId);
+    itemSel.innerHTML = '<option value="">소분류 *</option>' +
+        (cat ? cat.items.map(i => `<option value="${i.item_id}">${esc(i.item_name)}</option>`).join('') : '');
+}
+
 function esc(s) { return (s || '').replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;'); }
diff --git a/system1-factory/web/pages/work/proxy-input.html b/system1-factory/web/pages/work/proxy-input.html
index cb4f3af..ff321a7 100644
--- a/system1-factory/web/pages/work/proxy-input.html
+++ b/system1-factory/web/pages/work/proxy-input.html
@@ -80,7 +80,17 @@
             </div>
             <div class="pi-edit-row">
                 <label class="pi-field"><span>시간</span><input type="number" id="bulkHours" value="8" step="0.5" min="0" max="24" class="pi-input"></label>
-                <label class="pi-field"><span>부적합</span><input type="number" id="bulkDefect" value="0" step="0.5" min="0" max="24" class="pi-input"></label>
+                <label class="pi-field"><span>부적합 시간</span><input type="number" id="bulkDefect" value="0" step="0.5" min="0" max="24" class="pi-input" onchange="onDefectChange()"></label>
+            </div>
+            <div id="defectCategoryRow" class="hidden">
+                <div class="pi-edit-row">
+                    <select id="bulkDefectCategory" class="pi-select" onchange="onDefectCategoryChange()">
+                        <option value="">부적합 대분류 *</option>
+                    </select>
+                    <select id="bulkDefectItem" class="pi-select">
+                        <option value="">소분류 *</option>
+                    </select>
+                </div>
             </div>
             <input type="text" id="bulkNote" placeholder="비고 (선택)" class="pi-note-input">
         </div>