diff --git a/src/components/business/construction/labor-management/actions.ts b/src/components/business/construction/labor-management/actions.ts
index b665f57a..95e6a6e9 100644
--- a/src/components/business/construction/labor-management/actions.ts
+++ b/src/components/business/construction/labor-management/actions.ts
@@ -1,89 +1,85 @@
 'use server';
 
-import type { Labor, LaborListParams, LaborFormData, LaborStats } from './types';
+import type {
+  Labor,
+  LaborListParams,
+  LaborFormData,
+  LaborStats,
+} from './types';
+import { apiClient } from '@/lib/api';
 
-// 목데이터 - 7건
-const mockLabors: Labor[] = [
-  {
-    id: '1',
-    laborNumber: '123123',
-    category: '가로',
-    minM: 0,
-    maxM: 6.00,
-    laborPrice: 400000,
-    status: '사용',
-    createdAt: '2026-01-03T10:00:00Z',
-    updatedAt: '2026-01-03T10:00:00Z',
-  },
-  {
-    id: '2',
-    laborNumber: '123123',
-    category: '세로할증',
-    minM: 3.50,
-    maxM: 3.00,
-    laborPrice: null,
-    status: '중지',
-    createdAt: '2026-01-03T09:00:00Z',
-    updatedAt: '2026-01-03T09:00:00Z',
-  },
-  {
-    id: '3',
-    laborNumber: '123123',
-    category: '가로',
-    minM: 6.01,
-    maxM: 7.00,
-    laborPrice: null,
-    status: '사용',
-    createdAt: '2026-01-02T15:00:00Z',
-    updatedAt: '2026-01-02T15:00:00Z',
-  },
-  {
-    id: '4',
-    laborNumber: '123123',
-    category: '세로할증',
-    minM: 3.51,
-    maxM: 4.50,
-    laborPrice: 50000,
-    status: '사용',
-    createdAt: '2026-01-02T14:00:00Z',
-    updatedAt: '2026-01-02T14:00:00Z',
-  },
-  {
-    id: '5',
-    laborNumber: '123123',
-    category: '가로',
-    minM: 0,
-    maxM: 6.00,
-    laborPrice: null,
-    status: '사용',
-    createdAt: '2026-01-01T12:00:00Z',
-    updatedAt: '2026-01-01T12:00:00Z',
-  },
-  {
-    id: '6',
-    laborNumber: '123123',
-    category: '세로할증',
-    minM: 3.50,
-    maxM: 0,
-    laborPrice: 50000,
-    status: '사용',
-    createdAt: '2026-01-01T11:00:00Z',
-    updatedAt: '2026-01-01T11:00:00Z',
-  },
-  {
-    id: '7',
-    laborNumber: '123123',
-    category: '가로',
-    minM: 0,
-    maxM: 0,
-    laborPrice: null,
-    status: '중지',
-    createdAt: '2026-01-01T10:00:00Z',
-    updatedAt: '2026-01-01T10:00:00Z',
-  },
-];
+/**
+ * 시공관리 - 노임관리 Server Actions
+ * 표준화된 apiClient 사용 버전
+ */
 
-// 노임 목록 조회
+// ========================================
+// API 응답 타입
+// ========================================
+
+interface ApiLabor {
+  id: number;
+  labor_number: string;
+  category: '가로' | '세로할증';
+  min_m: number;
+  max_m: number;
+  labor_price: number | null;
+  status: '사용' | '중지';
+  is_active: boolean;
+  created_at: string;
+  updated_at: string;
+}
+
+interface ApiLaborStats {
+  total: number;
+  active: number;
+}
+
+// ========================================
+// 타입 변환 함수
+// ========================================
+
+/**
+ * API 응답 → Labor 타입 변환
+ */
+function transformLabor(apiData: ApiLabor): Labor {
+  return {
+    id: String(apiData.id),
+    laborNumber: apiData.labor_number || '',
+    category: apiData.category || '가로',
+    minM: apiData.min_m || 0,
+    maxM: apiData.max_m || 0,
+    laborPrice: apiData.labor_price,
+    status: apiData.status || '사용',
+    createdAt: apiData.created_at || '',
+    updatedAt: apiData.updated_at || '',
+  };
+}
+
+/**
+ * LaborFormData → API 요청 데이터 변환
+ */
+function transformToApiRequest(data: Partial<LaborFormData>): Record<string, unknown> {
+  const apiData: Record<string, unknown> = {};
+
+  if (data.laborNumber !== undefined) apiData.labor_number = data.laborNumber;
+  if (data.category !== undefined) apiData.category = data.category;
+  if (data.minM !== undefined) apiData.min_m = data.minM;
+  if (data.maxM !== undefined) apiData.max_m = data.maxM;
+  if (data.laborPrice !== undefined) apiData.labor_price = data.laborPrice;
+  if (data.status !== undefined) apiData.status = data.status;
+
+  return apiData;
+}
+
+// ========================================
+// API 함수
+// ========================================
+
+/**
+ * 노임 목록 조회
+ * GET /api/v1/labor
+ */
 export async function getLaborList(params: LaborListParams = {}): Promise<{
   success: boolean;
   data?: Labor[];
@@ -91,125 +87,120 @@ export async function getLaborList(params: LaborListParams = {}): Promise<{
   error?: string;
 }> {
   try {
-    let filtered = [...mockLabors];
+    const queryParams: Record<string, string> = {};
 
-    // 검색어 필터
-    if (params.search) {
-      const searchLower = params.search.toLowerCase();
-      filtered = filtered.filter(
-        (labor) =>
-          labor.laborNumber.toLowerCase().includes(searchLower) ||
-          labor.category.toLowerCase().includes(searchLower)
-      );
-    }
+    // 검색
+    if (params.search) queryParams.search = params.search;
 
-    // 구분 필터
-    if (params.category && params.category !== 'all') {
-      filtered = filtered.filter((labor) => labor.category === params.category);
-    }
-
-    // 상태 필터
-    if (params.status && params.status !== 'all') {
-      filtered = filtered.filter((labor) => labor.status === params.status);
-    }
+    // 필터
+    if (params.category && params.category !== 'all') queryParams.category = params.category;
+    if (params.status && params.status !== 'all') queryParams.status = params.status;
 
     // 날짜 필터
-    if (params.startDate) {
-      filtered = filtered.filter(
-        (labor) => new Date(labor.createdAt) >= new Date(params.startDate!)
-      );
-    }
-    if (params.endDate) {
-      const endDate = new Date(params.endDate);
-      endDate.setHours(23, 59, 59, 999);
-      filtered = filtered.filter(
-        (labor) => new Date(labor.createdAt) <= endDate
-      );
-    }
+    if (params.startDate) queryParams.start_date = params.startDate;
+    if (params.endDate) queryParams.end_date = params.endDate;
+
+    // 페이지네이션
+    if (params.page) queryParams.page = String(params.page);
+    if (params.limit) queryParams.per_page = String(params.limit);
 
     // 정렬
     if (params.sortOrder === '등록순') {
-      filtered.sort(
-        (a, b) => new Date(a.createdAt).getTime() - new Date(b.createdAt).getTime()
-      );
+      queryParams.sort_by = 'created_at';
+      queryParams.sort_dir = 'asc';
     } else {
       // 기본: 최신순
-      filtered.sort(
-        (a, b) => new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime()
-      );
+      queryParams.sort_by = 'created_at';
+      queryParams.sort_dir = 'desc';
     }
 
-    const total = filtered.length;
+    const response = await apiClient.get<{
+      data: ApiLabor[];
+      current_page: number;
+      per_page: number;
+      total: number;
+      last_page: number;
+    }>('/labor', { params: queryParams });
 
-    // 페이지네이션
-    if (params.page && params.limit) {
-      const start = (params.page - 1) * params.limit;
-      filtered = filtered.slice(start, start + params.limit);
-    }
+    const items = (response.data || []).map(transformLabor);
 
-    return { success: true, data: filtered, total };
+    return {
+      success: true,
+      data: items,
+      total: response.total || 0,
+    };
   } catch (error) {
     console.error('노임 목록 조회 실패:', error);
     return { success: false, error: '노임 목록을 불러오는데 실패했습니다.' };
   }
 }
 
-// 노임 통계 조회
+/**
+ * 노임 통계 조회
+ * GET /api/v1/labor/stats
+ */
 export async function getLaborStats(): Promise<{
   success: boolean;
   data?: LaborStats;
   error?: string;
 }> {
   try {
-    const total = mockLabors.length;
-    const active = mockLabors.filter((labor) => labor.status === '사용').length;
-    return { success: true, data: { total, active } };
+    const response = await apiClient.get<ApiLaborStats>('/labor/stats');
+
+    return {
+      success: true,
+      data: {
+        total: response.total || 0,
+        active: response.active || 0,
+      },
+    };
   } catch (error) {
     console.error('노임 통계 조회 실패:', error);
     return { success: false, error: '노임 통계를 불러오는데 실패했습니다.' };
   }
 }
 
-// 노임 상세 조회
+/**
+ * 노임 상세 조회
+ * GET /api/v1/labor/{id}
+ */
 export async function getLabor(id: string): Promise<{
   success: boolean;
   data?: Labor;
   error?: string;
 }> {
   try {
-    const labor = mockLabors.find((l) => l.id === id);
-    if (!labor) {
-      return { success: false, error: '노임 정보를 찾을 수 없습니다.' };
-    }
-    return { success: true, data: labor };
+    const response = await apiClient.get<ApiLabor>(`/labor/${id}`);
+    return { success: true, data: transformLabor(response) };
   } catch (error) {
     console.error('노임 상세 조회 실패:', error);
-    return { success: false, error: '노임 정보를 불러오는데 실패했습니다.' };
+    return { success: false, error: '노임 정보를 찾을 수 없습니다.' };
   }
 }
 
-// 노임 등록
+/**
+ * 노임 등록
+ * POST /api/v1/labor
+ */
 export async function createLabor(data: LaborFormData): Promise<{
   success: boolean;
   data?: Labor;
   error?: string;
 }> {
   try {
-    const newLabor: Labor = {
-      id: String(Date.now()),
-      ...data,
-      createdAt: new Date().toISOString(),
-      updatedAt: new Date().toISOString(),
-    };
-    mockLabors.unshift(newLabor);
-    return { success: true, data: newLabor };
+    const apiData = transformToApiRequest(data);
+    const response = await apiClient.post<ApiLabor>('/labor', apiData);
+    return { success: true, data: transformLabor(response) };
   } catch (error) {
     console.error('노임 등록 실패:', error);
     return { success: false, error: '노임 등록에 실패했습니다.' };
   }
 }
 
-// 노임 수정
+/**
+ * 노임 수정
+ * PUT /api/v1/labor/{id}
+ */
 export async function updateLabor(
   id: string,
   data: LaborFormData
@@ -219,33 +210,25 @@ export async function updateLabor(
   error?: string;
 }> {
   try {
-    const index = mockLabors.findIndex((l) => l.id === id);
-    if (index === -1) {
-      return { success: false, error: '노임 정보를 찾을 수 없습니다.' };
-    }
-    mockLabors[index] = {
-      ...mockLabors[index],
-      ...data,
-      updatedAt: new Date().toISOString(),
-    };
-    return { success: true, data: mockLabors[index] };
+    const apiData = transformToApiRequest(data);
+    const response = await apiClient.put<ApiLabor>(`/labor/${id}`, apiData);
+    return { success: true, data: transformLabor(response) };
   } catch (error) {
     console.error('노임 수정 실패:', error);
     return { success: false, error: '노임 수정에 실패했습니다.' };
   }
 }
 
-// 노임 삭제
+/**
+ * 노임 삭제
+ * DELETE /api/v1/labor/{id}
+ */
 export async function deleteLabor(id: string): Promise<{
   success: boolean;
   error?: string;
 }> {
   try {
-    const index = mockLabors.findIndex((l) => l.id === id);
-    if (index === -1) {
-      return { success: false, error: '노임 정보를 찾을 수 없습니다.' };
-    }
-    mockLabors.splice(index, 1);
+    await apiClient.delete(`/labor/${id}`);
     return { success: true };
   } catch (error) {
     console.error('노임 삭제 실패:', error);
@@ -253,22 +236,20 @@ export async function deleteLabor(id: string): Promise<{
   }
 }
 
-// 노임 일괄 삭제
+/**
+ * 노임 일괄 삭제
+ * DELETE /api/v1/labor/bulk
+ */
 export async function deleteLaborBulk(ids: string[]): Promise<{
   success: boolean;
   deletedCount?: number;
   error?: string;
 }> {
   try {
-    let deletedCount = 0;
-    for (const id of ids) {
-      const index = mockLabors.findIndex((l) => l.id === id);
-      if (index !== -1) {
-        mockLabors.splice(index, 1);
-        deletedCount++;
-      }
-    }
-    return { success: true, deletedCount };
+    await apiClient.delete('/labor/bulk', {
+      data: { ids: ids.map((id) => Number(id)) },
+    });
+    return { success: true, deletedCount: ids.length };
   } catch (error) {
     console.error('노임 일괄 삭제 실패:', error);
     return { success: false, error: '노임 일괄 삭제에 실패했습니다.' };
diff --git a/src/components/business/construction/partners/PartnerForm.tsx b/src/components/business/construction/partners/PartnerForm.tsx
index 28c8ae4b..957868c4 100644
--- a/src/components/business/construction/partners/PartnerForm.tsx
+++ b/src/components/business/construction/partners/PartnerForm.tsx
@@ -33,13 +33,13 @@ import { toast } from 'sonner';
 import type { Partner, PartnerFormData, PartnerMemo, PartnerDocument } from './types';
 import {
   PARTNER_TYPE_OPTIONS,
-  CATEGORY_OPTIONS,
   CREDIT_RATING_OPTIONS,
   TRANSACTION_GRADE_OPTIONS,
   PAYMENT_DAY_OPTIONS,
   getEmptyPartnerFormData,
   partnerToFormData,
 } from './types';
+import { createPartner, updatePartner, deletePartner } from './actions';
 
 // 목업 문서 목록 (상세 모드에서 다운로드 버튼 테스트용)
 const MOCK_DOCUMENTS: PartnerDocument[] = [
@@ -158,8 +158,19 @@ export default function PartnerForm({ mode, partnerId, initialData }: PartnerFor
   const handleConfirmSave = useCallback(async () => {
     setIsLoading(true);
     try {
-      // TODO: 실제 API 연동
-      await new Promise((resolve) => setTimeout(resolve, 1000));
+      let result;
+      if (isNewMode) {
+        result = await createPartner(formData);
+      } else if (partnerId) {
+        result = await updatePartner(partnerId, formData);
+      } else {
+        throw new Error('거래처 ID가 없습니다.');
+      }
+
+      if (!result.success) {
+        throw new Error(result.error || '저장에 실패했습니다.');
+      }
+
       toast.success(isNewMode ? '거래처가 등록되었습니다.' : '수정이 완료되었습니다.');
       setShowSaveDialog(false);
       router.push('/ko/construction/project/bidding/partners');
@@ -169,7 +180,7 @@ export default function PartnerForm({ mode, partnerId, initialData }: PartnerFor
     } finally {
       setIsLoading(false);
     }
-  }, [isNewMode, router]);
+  }, [isNewMode, partnerId, formData, router]);
 
   // 삭제 핸들러
   const handleDelete = useCallback(() => {
@@ -177,10 +188,19 @@ export default function PartnerForm({ mode, partnerId, initialData }: PartnerFor
   }, []);
 
   const handleConfirmDelete = useCallback(async () => {
+    if (!partnerId) {
+      toast.error('거래처 ID가 없습니다.');
+      return;
+    }
+
     setIsLoading(true);
     try {
-      // TODO: 실제 API 연동
-      await new Promise((resolve) => setTimeout(resolve, 1000));
+      const result = await deletePartner(partnerId);
+
+      if (!result.success) {
+        throw new Error(result.error || '삭제에 실패했습니다.');
+      }
+
       toast.success('거래처가 삭제되었습니다.');
       setShowDeleteDialog(false);
       router.push('/ko/construction/project/bidding/partners');
@@ -190,7 +210,7 @@ export default function PartnerForm({ mode, partnerId, initialData }: PartnerFor
     } finally {
       setIsLoading(false);
     }
-  }, [router]);
+  }, [partnerId, router]);
 
   // 메모 추가 핸들러
   const handleAddMemo = useCallback(() => {
@@ -493,8 +513,7 @@ export default function PartnerForm({ mode, partnerId, initialData }: PartnerFor
             {renderField('대표자명', 'representative', formData.representative)}
             {renderSelectField('거래처 유형', 'partnerType', formData.partnerType, PARTNER_TYPE_OPTIONS)}
             {renderField('업태', 'businessType', formData.businessType)}
-            {renderSelectField('업종', 'category', formData.category, CATEGORY_OPTIONS)}
-            {renderField('업종(직접입력)', 'businessCategory', formData.businessCategory)}
+            {renderField('업종', 'businessCategory', formData.businessCategory)}
           </CardContent>
         </Card>
 
diff --git a/src/components/business/construction/partners/actions.ts b/src/components/business/construction/partners/actions.ts
index 5b78610a..26d47738 100644
--- a/src/components/business/construction/partners/actions.ts
+++ b/src/components/business/construction/partners/actions.ts
@@ -74,6 +74,18 @@ function transformPartnerType(partnerType: Partner['partnerType']): string {
   return typeMap[partnerType] || 'SALES';
 }
 
+/**
+ * client_type → 구분 라벨 변환
+ */
+function getPartnerTypeLabel(clientType: string | null | undefined): string {
+  const labelMap: Record<string, string> = {
+    SALES: '매출',
+    PURCHASE: '매입',
+    BOTH: '복합',
+  };
+  return labelMap[clientType || ''] || '매출';
+}
+
 /**
  * API 응답 → Partner 타입 변환
  */
@@ -109,7 +121,7 @@ function transformPartner(apiData: ApiPartner): Partner {
     badDebtToggle: apiData.has_bad_debt,
     memos: [],
     documents: [],
-    category: '',
+    category: getPartnerTypeLabel(apiData.client_type),
     paymentDay: 0,
     isBadDebt: apiData.has_bad_debt,
     isActive: apiData.is_active !== false,
@@ -165,15 +177,20 @@ export async function getPartnerList(filter?: PartnerFilter): Promise<{
     if (filter?.page) queryParams.page = String(filter.page);
     if (filter?.size) queryParams.size = String(filter.size);
 
+    // API 응답 구조: { success, data: { data: [...], current_page, per_page, total, last_page } }
     const response = await apiClient.get<{
-      data: ApiPartner[];
-      current_page: number;
-      per_page: number;
-      total: number;
-      last_page: number;
+      success: boolean;
+      data: {
+        data: ApiPartner[];
+        current_page: number;
+        per_page: number;
+        total: number;
+        last_page: number;
+      };
     }>('/clients', { params: queryParams });
 
-    let items = (response.data || []).map(transformPartner);
+    const paginated = response.data;
+    let items = (paginated?.data || []).map(transformPartner);
 
     // 악성채권 필터 (프론트엔드에서 처리)
     if (filter?.badDebtFilter && filter.badDebtFilter !== 'all') {
@@ -202,10 +219,10 @@ export async function getPartnerList(filter?: PartnerFilter): Promise<{
       success: true,
       data: {
         items,
-        total: response.total || 0,
-        page: response.current_page || 1,
-        size: response.per_page || 20,
-        totalPages: response.last_page || 1,
+        total: paginated?.total || 0,
+        page: paginated?.current_page || 1,
+        size: paginated?.per_page || 20,
+        totalPages: paginated?.last_page || 1,
       },
     };
   } catch (error) {
@@ -224,8 +241,9 @@ export async function getPartner(id: string): Promise<{
   error?: string;
 }> {
   try {
-    const response = await apiClient.get<ApiPartner>(`/clients/${id}`);
-    return { success: true, data: transformPartner(response) };
+    // API 응답 구조: { success, data: {...single item} }
+    const response = await apiClient.get<{ success: boolean; data: ApiPartner }>(`/clients/${id}`);
+    return { success: true, data: transformPartner(response.data) };
   } catch (error) {
     console.error('거래처 조회 오류:', error);
     return { success: false, error: '거래처를 찾을 수 없습니다.' };
@@ -243,8 +261,9 @@ export async function createPartner(data: PartnerFormData): Promise<{
 }> {
   try {
     const apiData = transformPartnerToApi(data);
-    const response = await apiClient.post<ApiPartner>('/clients', apiData);
-    return { success: true, data: transformPartner(response) };
+    // API 응답 구조: { success, data: {...created item} }
+    const response = await apiClient.post<{ success: boolean; data: ApiPartner }>('/clients', apiData);
+    return { success: true, data: transformPartner(response.data) };
   } catch (error) {
     console.error('거래처 등록 오류:', error);
     return { success: false, error: '거래처 등록에 실패했습니다.' };
@@ -262,8 +281,9 @@ export async function updatePartner(id: string, data: PartnerFormData): Promise<
 }> {
   try {
     const apiData = transformPartnerToApi(data);
-    const response = await apiClient.put<ApiPartner>(`/clients/${id}`, apiData);
-    return { success: true, data: transformPartner(response) };
+    // API 응답 구조: { success, data: {...updated item} }
+    const response = await apiClient.put<{ success: boolean; data: ApiPartner }>(`/clients/${id}`, apiData);
+    return { success: true, data: transformPartner(response.data) };
   } catch (error) {
     console.error('거래처 수정 오류:', error);
     return { success: false, error: '거래처 수정에 실패했습니다.' };
@@ -280,15 +300,17 @@ export async function getPartnerStats(): Promise<{
   error?: string;
 }> {
   try {
-    const response = await apiClient.get<ApiPartnerStats>('/clients/stats');
+    // API 응답 구조: { success, data: {...stats} }
+    const response = await apiClient.get<{ success: boolean; data: ApiPartnerStats }>('/clients/stats');
+    const stats = response.data;
 
     return {
       success: true,
       data: {
-        total: response.total || 0,
+        total: stats?.total || 0,
         unregistered: 0,
-        badDebt: response.badDebt || 0,
-        normal: response.normal || 0,
+        badDebt: stats?.badDebt || 0,
+        normal: stats?.normal || 0,
       },
     };
   } catch (error) {
diff --git a/src/components/business/construction/site-management/actions.ts b/src/components/business/construction/site-management/actions.ts
index 2ccaadca..2dab97ae 100644
--- a/src/components/business/construction/site-management/actions.ts
+++ b/src/components/business/construction/site-management/actions.ts
@@ -210,4 +210,40 @@ export async function deleteSites(ids: string[]): Promise<{
     console.error('현장 일괄 삭제 오류:', error);
     return { success: false, error: '현장 일괄 삭제에 실패했습니다.' };
   }
+}
+
+// ========================================
+// 현장 생성/수정 타입
+// ========================================
+
+export interface CreateSiteData {
+  siteName: string;
+  partnerId: string;
+  address?: string;
+  status?: SiteStatus;
+}
+
+/**
+ * 현장 등록
+ * POST /api/v1/sites
+ */
+export async function createSite(data: CreateSiteData): Promise<{
+  success: boolean;
+  data?: Site;
+  error?: string;
+}> {
+  try {
+    const apiData = {
+      name: data.siteName,
+      client_id: data.partnerId ? Number(data.partnerId) : null,
+      address: data.address || null,
+      status: data.status || 'unregistered',
+    };
+
+    const response = await apiClient.post<{ success: boolean; data: ApiSite }>('/sites', apiData);
+    return { success: true, data: transformSite(response.data) };
+  } catch (error) {
+    console.error('현장 등록 오류:', error);
+    return { success: false, error: '현장 등록에 실패했습니다.' };
+  }
 }
\ No newline at end of file