From 77812534914cc34c2cd842df99f94ed523699488 Mon Sep 17 00:00:00 2001
From: hskwon <shine1324@gmail.com>
Date: Mon, 22 Dec 2025 15:30:38 +0900
Subject: [PATCH] =?UTF-8?q?feat:=20Phase=208.3=20=ED=9A=8C=EC=82=AC=20?=
 =?UTF-8?q?=EC=B6=94=EA=B0=80=20API=20=EA=B5=AC=ED=98=84?=
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- 사업자등록번호 유효성 검사 API (바로빌 연동)
- 회사 추가 신청/승인/반려 워크플로우
- 신청 승인 시 테넌트 자동 생성 및 사용자 연결
- 관리자용 신청 목록/상세 조회
- 사용자용 내 신청 목록 조회
- Swagger 문서 및 i18n 메시지 추가
---
 .../Controllers/Api/V1/CompanyController.php  |  91 ++++
 .../V1/Company/CheckBusinessNumberRequest.php |  28 ++
 .../Company/CompanyRequestActionRequest.php   |  20 +
 .../V1/Company/CompanyRequestIndexRequest.php |  29 ++
 .../V1/Company/CompanyRequestStoreRequest.php |  34 ++
 app/Models/CompanyRequest.php                 | 237 ++++++++++
 app/Services/BarobillService.php              | 142 ++++++
 app/Services/CompanyService.php               | 258 +++++++++++
 app/Swagger/v1/CompanyApi.php                 | 419 ++++++++++++++++++
 ...2_100001_create_company_requests_table.php |  45 ++
 lang/ko/error.php                             |   9 +
 lang/ko/message.php                           |   8 +
 routes/api.php                                |  12 +
 13 files changed, 1332 insertions(+)
 create mode 100644 app/Http/Controllers/Api/V1/CompanyController.php
 create mode 100644 app/Http/Requests/V1/Company/CheckBusinessNumberRequest.php
 create mode 100644 app/Http/Requests/V1/Company/CompanyRequestActionRequest.php
 create mode 100644 app/Http/Requests/V1/Company/CompanyRequestIndexRequest.php
 create mode 100644 app/Http/Requests/V1/Company/CompanyRequestStoreRequest.php
 create mode 100644 app/Models/CompanyRequest.php
 create mode 100644 app/Services/CompanyService.php
 create mode 100644 app/Swagger/v1/CompanyApi.php
 create mode 100644 database/migrations/2025_12_22_100001_create_company_requests_table.php

diff --git a/app/Http/Controllers/Api/V1/CompanyController.php b/app/Http/Controllers/Api/V1/CompanyController.php
new file mode 100644
index 0000000..a1d7d0d
--- /dev/null
+++ b/app/Http/Controllers/Api/V1/CompanyController.php
@@ -0,0 +1,91 @@
+<?php
+
+namespace App\Http\Controllers\Api\V1;
+
+use App\Http\Controllers\Controller;
+use App\Http\Requests\V1\Company\CheckBusinessNumberRequest;
+use App\Http\Requests\V1\Company\CompanyRequestActionRequest;
+use App\Http\Requests\V1\Company\CompanyRequestIndexRequest;
+use App\Http\Requests\V1\Company\CompanyRequestStoreRequest;
+use App\Http\Response\ApiResponse;
+use App\Services\CompanyService;
+use Illuminate\Http\JsonResponse;
+
+class CompanyController extends Controller
+{
+    public function __construct(
+        private readonly CompanyService $companyService
+    ) {}
+
+    /**
+     * 사업자등록번호 유효성 검사
+     */
+    public function check(CheckBusinessNumberRequest $request): JsonResponse
+    {
+        $result = $this->companyService->checkBusinessNumber(
+            $request->validated()['business_number']
+        );
+
+        return ApiResponse::handle('message.company.checked', $result);
+    }
+
+    /**
+     * 회사 추가 신청
+     */
+    public function request(CompanyRequestStoreRequest $request): JsonResponse
+    {
+        $result = $this->companyService->createRequest($request->validated());
+
+        return ApiResponse::handle('message.company.request_created', $result, 201);
+    }
+
+    /**
+     * 회사 추가 신청 목록 (관리자용)
+     */
+    public function requests(CompanyRequestIndexRequest $request): JsonResponse
+    {
+        $result = $this->companyService->getRequests($request->validated());
+
+        return ApiResponse::handle('message.fetched', $result);
+    }
+
+    /**
+     * 회사 추가 신청 상세
+     */
+    public function showRequest(int $id): JsonResponse
+    {
+        $result = $this->companyService->getRequest($id);
+
+        return ApiResponse::handle('message.fetched', $result);
+    }
+
+    /**
+     * 회사 추가 신청 승인
+     */
+    public function approve(int $id): JsonResponse
+    {
+        $result = $this->companyService->approveRequest($id);
+
+        return ApiResponse::handle('message.company.request_approved', $result);
+    }
+
+    /**
+     * 회사 추가 신청 반려
+     */
+    public function reject(CompanyRequestActionRequest $request, int $id): JsonResponse
+    {
+        $result = $this->companyService->rejectRequest($id, $request->validated()['reason'] ?? null);
+
+        return ApiResponse::handle('message.company.request_rejected', $result);
+    }
+
+    /**
+     * 내 회사 추가 신청 목록
+     */
+    public function myRequests(CompanyRequestIndexRequest $request): JsonResponse
+    {
+        $result = $this->companyService->getMyRequests($request->validated());
+
+        return ApiResponse::handle('message.fetched', $result);
+    }
+}
diff --git a/app/Http/Requests/V1/Company/CheckBusinessNumberRequest.php b/app/Http/Requests/V1/Company/CheckBusinessNumberRequest.php
new file mode 100644
index 0000000..435d0cf
--- /dev/null
+++ b/app/Http/Requests/V1/Company/CheckBusinessNumberRequest.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Http\Requests\V1\Company;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class CheckBusinessNumberRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'business_number' => 'required|string|min:10|max:13',
+        ];
+    }
+
+    public function messages(): array
+    {
+        return [
+            'business_number.required' => __('validation.required', ['attribute' => '사업자등록번호']),
+            'business_number.min' => __('validation.min.string', ['attribute' => '사업자등록번호', 'min' => 10]),
+        ];
+    }
+}
diff --git a/app/Http/Requests/V1/Company/CompanyRequestActionRequest.php b/app/Http/Requests/V1/Company/CompanyRequestActionRequest.php
new file mode 100644
index 0000000..e3c5e01
--- /dev/null
+++ b/app/Http/Requests/V1/Company/CompanyRequestActionRequest.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Http\Requests\V1\Company;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class CompanyRequestActionRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'reason' => 'nullable|string|max:500',
+        ];
+    }
+}
diff --git a/app/Http/Requests/V1/Company/CompanyRequestIndexRequest.php b/app/Http/Requests/V1/Company/CompanyRequestIndexRequest.php
new file mode 100644
index 0000000..cc3dd44
--- /dev/null
+++ b/app/Http/Requests/V1/Company/CompanyRequestIndexRequest.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Http\Requests\V1\Company;
+
+use App\Models\CompanyRequest;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+class CompanyRequestIndexRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'status' => ['nullable', Rule::in(CompanyRequest::STATUSES)],
+            'search' => 'nullable|string|max:100',
+            'start_date' => 'nullable|date',
+            'end_date' => 'nullable|date|after_or_equal:start_date',
+            'sort_by' => ['nullable', Rule::in(['created_at', 'company_name', 'status', 'processed_at'])],
+            'sort_dir' => ['nullable', Rule::in(['asc', 'desc'])],
+            'per_page' => 'nullable|integer|min:1|max:100',
+            'page' => 'nullable|integer|min:1',
+        ];
+    }
+}
diff --git a/app/Http/Requests/V1/Company/CompanyRequestStoreRequest.php b/app/Http/Requests/V1/Company/CompanyRequestStoreRequest.php
new file mode 100644
index 0000000..7e7b4f7
--- /dev/null
+++ b/app/Http/Requests/V1/Company/CompanyRequestStoreRequest.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Http\Requests\V1\Company;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class CompanyRequestStoreRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'business_number' => 'required|string|min:10|max:13',
+            'company_name' => 'required|string|max:200',
+            'ceo_name' => 'nullable|string|max:50',
+            'address' => 'nullable|string|max:300',
+            'phone' => 'nullable|string|max:30',
+            'email' => 'nullable|email|max:100',
+            'message' => 'nullable|string|max:1000',
+        ];
+    }
+
+    public function messages(): array
+    {
+        return [
+            'business_number.required' => __('validation.required', ['attribute' => '사업자등록번호']),
+            'company_name.required' => __('validation.required', ['attribute' => '회사명']),
+        ];
+    }
+}
diff --git a/app/Models/CompanyRequest.php b/app/Models/CompanyRequest.php
new file mode 100644
index 0000000..0a9e99f
--- /dev/null
+++ b/app/Models/CompanyRequest.php
@@ -0,0 +1,237 @@
+<?php
+
+namespace App\Models;
+
+use App\Models\Members\User;
+use App\Models\Tenants\Tenant;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+/**
+ * 회사 추가 신청 모델
+ *
+ * @property int $id
+ * @property int $user_id 신청자 ID
+ * @property string $business_number 사업자등록번호
+ * @property string $company_name 회사명
+ * @property string|null $ceo_name 대표자명
+ * @property string|null $address 주소
+ * @property string|null $phone 전화번호
+ * @property string|null $email 이메일
+ * @property string $status 상태 (pending, approved, rejected)
+ * @property string|null $message 신청 메시지
+ * @property string|null $reject_reason 반려 사유
+ * @property array|null $barobill_response 바로빌 검증 응답
+ * @property int|null $approved_by 승인/반려 처리자
+ * @property int|null $created_tenant_id 생성된 테넌트 ID
+ * @property \Carbon\Carbon|null $processed_at 처리일시
+ * @property \Carbon\Carbon $created_at
+ * @property \Carbon\Carbon $updated_at
+ */
+class CompanyRequest extends Model
+{
+    // =========================================================================
+    // 상수 정의
+    // =========================================================================
+
+    /** 상태 */
+    public const STATUS_PENDING = 'pending';
+
+    public const STATUS_APPROVED = 'approved';
+
+    public const STATUS_REJECTED = 'rejected';
+
+    public const STATUSES = [
+        self::STATUS_PENDING,
+        self::STATUS_APPROVED,
+        self::STATUS_REJECTED,
+    ];
+
+    /** 상태 라벨 */
+    public const STATUS_LABELS = [
+        self::STATUS_PENDING => '대기중',
+        self::STATUS_APPROVED => '승인',
+        self::STATUS_REJECTED => '반려',
+    ];
+
+    // =========================================================================
+    // 모델 설정
+    // =========================================================================
+
+    protected $fillable = [
+        'user_id',
+        'business_number',
+        'company_name',
+        'ceo_name',
+        'address',
+        'phone',
+        'email',
+        'status',
+        'message',
+        'reject_reason',
+        'barobill_response',
+        'approved_by',
+        'created_tenant_id',
+        'processed_at',
+    ];
+
+    protected $casts = [
+        'barobill_response' => 'array',
+        'processed_at' => 'datetime',
+    ];
+
+    protected $attributes = [
+        'status' => self::STATUS_PENDING,
+    ];
+
+    // =========================================================================
+    // 관계
+    // =========================================================================
+
+    /**
+     * 신청자
+     */
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    /**
+     * 처리자 (승인/반려)
+     */
+    public function approver(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'approved_by');
+    }
+
+    /**
+     * 생성된 테넌트
+     */
+    public function createdTenant(): BelongsTo
+    {
+        return $this->belongsTo(Tenant::class, 'created_tenant_id');
+    }
+
+    // =========================================================================
+    // 스코프
+    // =========================================================================
+
+    /**
+     * 대기중인 신청만
+     */
+    public function scopePending($query)
+    {
+        return $query->where('status', self::STATUS_PENDING);
+    }
+
+    /**
+     * 승인된 신청만
+     */
+    public function scopeApproved($query)
+    {
+        return $query->where('status', self::STATUS_APPROVED);
+    }
+
+    /**
+     * 반려된 신청만
+     */
+    public function scopeRejected($query)
+    {
+        return $query->where('status', self::STATUS_REJECTED);
+    }
+
+    /**
+     * 상태 필터
+     */
+    public function scopeOfStatus($query, string $status)
+    {
+        return $query->where('status', $status);
+    }
+
+    // =========================================================================
+    // 접근자
+    // =========================================================================
+
+    /**
+     * 상태 라벨
+     */
+    public function getStatusLabelAttribute(): string
+    {
+        return self::STATUS_LABELS[$this->status] ?? $this->status;
+    }
+
+    /**
+     * 대기중 여부
+     */
+    public function getIsPendingAttribute(): bool
+    {
+        return $this->status === self::STATUS_PENDING;
+    }
+
+    /**
+     * 승인됨 여부
+     */
+    public function getIsApprovedAttribute(): bool
+    {
+        return $this->status === self::STATUS_APPROVED;
+    }
+
+    /**
+     * 반려됨 여부
+     */
+    public function getIsRejectedAttribute(): bool
+    {
+        return $this->status === self::STATUS_REJECTED;
+    }
+
+    /**
+     * 사업자등록번호 포맷 (하이픈 포함)
+     */
+    public function getFormattedBusinessNumberAttribute(): string
+    {
+        $num = preg_replace('/[^0-9]/', '', $this->business_number);
+        if (strlen($num) === 10) {
+            return substr($num, 0, 3).'-'.substr($num, 3, 2).'-'.substr($num, 5, 5);
+        }
+
+        return $this->business_number;
+    }
+
+    // =========================================================================
+    // 헬퍼 메서드
+    // =========================================================================
+
+    /**
+     * 승인 처리
+     */
+    public function approve(int $approverId, int $tenantId): bool
+    {
+        if (! $this->is_pending) {
+            return false;
+        }
+
+        $this->status = self::STATUS_APPROVED;
+        $this->approved_by = $approverId;
+        $this->created_tenant_id = $tenantId;
+        $this->processed_at = now();
+
+        return $this->save();
+    }
+
+    /**
+     * 반려 처리
+     */
+    public function reject(int $approverId, ?string $reason = null): bool
+    {
+        if (! $this->is_pending) {
+            return false;
+        }
+
+        $this->status = self::STATUS_REJECTED;
+        $this->approved_by = $approverId;
+        $this->reject_reason = $reason;
+        $this->processed_at = now();
+
+        return $this->save();
+    }
+}
diff --git a/app/Services/BarobillService.php b/app/Services/BarobillService.php
index 970bbf4..1d8451f 100644
--- a/app/Services/BarobillService.php
+++ b/app/Services/BarobillService.php
@@ -119,6 +119,148 @@ public function testConnection(): array
         }
     }
 
+    // =========================================================================
+    // 사업자등록번호 검증
+    // =========================================================================
+
+    /**
+     * 사업자등록번호 유효성 검사 (휴폐업 조회)
+     *
+     * 바로빌 API를 통해 사업자등록번호의 유효성을 검증합니다.
+     * 바로빌 설정이 없는 경우 기본 형식 검증만 수행합니다.
+     *
+     * @param  string  $businessNumber  사업자등록번호 (10자리, 하이픈 제거)
+     * @return array{valid: bool, status: string, status_label: string, corp_name: ?string, ceo_name: ?string, message: string}
+     */
+    public function checkBusinessNumber(string $businessNumber): array
+    {
+        // 하이픈 제거 및 숫자만 추출
+        $businessNumber = preg_replace('/[^0-9]/', '', $businessNumber);
+
+        // 기본 형식 검증 (10자리)
+        if (strlen($businessNumber) !== 10) {
+            return [
+                'valid' => false,
+                'status' => 'invalid_format',
+                'status_label' => '형식 오류',
+                'corp_name' => null,
+                'ceo_name' => null,
+                'message' => __('error.company.invalid_business_number_format'),
+            ];
+        }
+
+        // 체크섬 검증 (사업자등록번호 자체 유효성)
+        if (! $this->validateBusinessNumberChecksum($businessNumber)) {
+            return [
+                'valid' => false,
+                'status' => 'invalid_checksum',
+                'status_label' => '유효하지 않음',
+                'corp_name' => null,
+                'ceo_name' => null,
+                'message' => __('error.company.invalid_business_number'),
+            ];
+        }
+
+        // 바로빌 API 조회 시도
+        try {
+            $response = $this->callApi('CheckCorpNum', [
+                'CorpNum' => $businessNumber,
+            ]);
+
+            // 바로빌 응답 해석
+            if (isset($response['CorpState'])) {
+                $state = $response['CorpState'];
+                $isValid = in_array($state, ['01', '02']); // 01: 사업중, 02: 휴업
+                $statusLabel = match ($state) {
+                    '01' => '사업중',
+                    '02' => '휴업',
+                    '03' => '폐업',
+                    default => '조회 불가',
+                };
+
+                return [
+                    'valid' => $isValid,
+                    'status' => $state,
+                    'status_label' => $statusLabel,
+                    'corp_name' => $response['CorpName'] ?? null,
+                    'ceo_name' => $response['CEOName'] ?? null,
+                    'message' => $isValid
+                        ? __('message.company.business_number_valid')
+                        : __('error.company.business_closed'),
+                ];
+            }
+
+            // 응답 형식이 다른 경우 (결과 코드 방식)
+            if (isset($response['Result'])) {
+                $isValid = $response['Result'] >= 0;
+
+                return [
+                    'valid' => $isValid,
+                    'status' => $isValid ? 'active' : 'unknown',
+                    'status_label' => $isValid ? '유효함' : '조회 불가',
+                    'corp_name' => $response['CorpName'] ?? null,
+                    'ceo_name' => $response['CEOName'] ?? null,
+                    'message' => $isValid
+                        ? __('message.company.business_number_valid')
+                        : ($response['Message'] ?? __('error.company.check_failed')),
+                ];
+            }
+
+            // 기본 응답 (체크섬만 통과한 경우)
+            return [
+                'valid' => true,
+                'status' => 'format_valid',
+                'status_label' => '형식 유효',
+                'corp_name' => null,
+                'ceo_name' => null,
+                'message' => __('message.company.business_number_format_valid'),
+            ];
+        } catch (\Exception $e) {
+            // API 호출 실패 시 형식 검증 결과만 반환
+            Log::warning('바로빌 사업자번호 조회 실패', [
+                'business_number' => $businessNumber,
+                'error' => $e->getMessage(),
+            ]);
+
+            return [
+                'valid' => true,
+                'status' => 'format_valid',
+                'status_label' => '형식 유효 (API 조회 불가)',
+                'corp_name' => null,
+                'ceo_name' => null,
+                'message' => __('message.company.business_number_format_valid'),
+            ];
+        }
+    }
+
+    /**
+     * 사업자등록번호 체크섬 검증
+     *
+     * @param  string  $businessNumber  10자리 사업자등록번호
+     */
+    private function validateBusinessNumberChecksum(string $businessNumber): bool
+    {
+        if (strlen($businessNumber) !== 10) {
+            return false;
+        }
+
+        $digits = str_split($businessNumber);
+        $multipliers = [1, 3, 7, 1, 3, 7, 1, 3, 5];
+        $sum = 0;
+
+        for ($i = 0; $i < 9; $i++) {
+            $sum += intval($digits[$i]) * $multipliers[$i];
+        }
+
+        // 8번째 자리 (인덱스 8)에 대한 추가 처리
+        $sum += intval(floor(intval($digits[8]) * 5 / 10));
+
+        $remainder = $sum % 10;
+        $checkDigit = (10 - $remainder) % 10;
+
+        return $checkDigit === intval($digits[9]);
+    }
+
     // =========================================================================
     // 세금계산서 발행
     // =========================================================================
diff --git a/app/Services/CompanyService.php b/app/Services/CompanyService.php
new file mode 100644
index 0000000..ee53179
--- /dev/null
+++ b/app/Services/CompanyService.php
@@ -0,0 +1,258 @@
+<?php
+
+namespace App\Services;
+
+use App\Models\CompanyRequest;
+use App\Models\Members\UserTenant;
+use App\Models\Tenants\Tenant;
+use Illuminate\Contracts\Pagination\LengthAwarePaginator;
+use Illuminate\Support\Facades\DB;
+use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
+
+class CompanyService extends Service
+{
+    public function __construct(
+        private readonly BarobillService $barobillService,
+        private readonly TenantService $tenantService
+    ) {}
+
+    // =========================================================================
+    // 사업자등록번호 검증
+    // =========================================================================
+
+    /**
+     * 사업자등록번호 유효성 검사
+     */
+    public function checkBusinessNumber(string $businessNumber): array
+    {
+        // 바로빌 서비스를 통한 사업자등록번호 검증
+        $result = $this->barobillService->checkBusinessNumber($businessNumber);
+
+        // 이미 등록된 회사인지 확인
+        $normalizedNumber = preg_replace('/[^0-9]/', '', $businessNumber);
+        $existingTenant = Tenant::query()
+            ->where('business_num', $normalizedNumber)
+            ->orWhere('business_num', $this->formatBusinessNumber($normalizedNumber))
+            ->first();
+
+        if ($existingTenant) {
+            $result['already_exists'] = true;
+            $result['existing_company_name'] = $existingTenant->company_name;
+        } else {
+            $result['already_exists'] = false;
+            $result['existing_company_name'] = null;
+        }
+
+        return $result;
+    }
+
+    /**
+     * 사업자등록번호 포맷 (하이픈 추가)
+     */
+    private function formatBusinessNumber(string $number): string
+    {
+        $number = preg_replace('/[^0-9]/', '', $number);
+        if (strlen($number) === 10) {
+            return substr($number, 0, 3).'-'.substr($number, 3, 2).'-'.substr($number, 5, 5);
+        }
+
+        return $number;
+    }
+
+    // =========================================================================
+    // 회사 추가 신청
+    // =========================================================================
+
+    /**
+     * 회사 추가 신청 생성
+     */
+    public function createRequest(array $data): CompanyRequest
+    {
+        $userId = $this->apiUserId();
+        $businessNumber = preg_replace('/[^0-9]/', '', $data['business_number']);
+
+        // 중복 신청 확인 (대기중인 신청이 있는지)
+        $existingRequest = CompanyRequest::query()
+            ->where('user_id', $userId)
+            ->where('business_number', $businessNumber)
+            ->where('status', CompanyRequest::STATUS_PENDING)
+            ->first();
+
+        if ($existingRequest) {
+            throw new BadRequestHttpException(__('error.company.request_already_exists'));
+        }
+
+        // 이미 등록된 회사인지 확인
+        $existingTenant = Tenant::query()
+            ->where('business_num', $businessNumber)
+            ->orWhere('business_num', $this->formatBusinessNumber($businessNumber))
+            ->first();
+
+        if ($existingTenant) {
+            // 이미 존재하는 회사에 합류 신청
+            // 해당 회사의 관리자에게 알림을 보내거나 별도 처리 가능
+            throw new BadRequestHttpException(__('error.company.already_registered'));
+        }
+
+        // 사업자등록번호 유효성 검사
+        $validationResult = $this->barobillService->checkBusinessNumber($businessNumber);
+
+        return CompanyRequest::create([
+            'user_id' => $userId,
+            'business_number' => $businessNumber,
+            'company_name' => $data['company_name'],
+            'ceo_name' => $data['ceo_name'] ?? $validationResult['ceo_name'] ?? null,
+            'address' => $data['address'] ?? null,
+            'phone' => $data['phone'] ?? null,
+            'email' => $data['email'] ?? null,
+            'message' => $data['message'] ?? null,
+            'status' => CompanyRequest::STATUS_PENDING,
+            'barobill_response' => $validationResult,
+        ]);
+    }
+
+    /**
+     * 회사 추가 신청 목록 (관리자용)
+     */
+    public function getRequests(array $params): LengthAwarePaginator
+    {
+        $query = CompanyRequest::query()
+            ->with(['user:id,name,email', 'approver:id,name,email', 'createdTenant:id,company_name,code']);
+
+        // 상태 필터
+        if (! empty($params['status'])) {
+            $query->ofStatus($params['status']);
+        }
+
+        // 검색 (사업자번호, 회사명, 신청자명)
+        if (! empty($params['search'])) {
+            $search = $params['search'];
+            $query->where(function ($q) use ($search) {
+                $q->where('business_number', 'like', "%{$search}%")
+                    ->orWhere('company_name', 'like', "%{$search}%")
+                    ->orWhereHas('user', function ($uq) use ($search) {
+                        $uq->where('name', 'like', "%{$search}%");
+                    });
+            });
+        }
+
+        // 날짜 범위 필터
+        if (! empty($params['start_date'])) {
+            $query->whereDate('created_at', '>=', $params['start_date']);
+        }
+        if (! empty($params['end_date'])) {
+            $query->whereDate('created_at', '<=', $params['end_date']);
+        }
+
+        // 정렬
+        $sortBy = $params['sort_by'] ?? 'created_at';
+        $sortDir = $params['sort_dir'] ?? 'desc';
+        $query->orderBy($sortBy, $sortDir);
+
+        $perPage = $params['per_page'] ?? 20;
+
+        return $query->paginate($perPage);
+    }
+
+    /**
+     * 회사 추가 신청 상세
+     */
+    public function getRequest(int $id): CompanyRequest
+    {
+        return CompanyRequest::query()
+            ->with(['user:id,name,email', 'approver:id,name,email', 'createdTenant:id,company_name,code'])
+            ->findOrFail($id);
+    }
+
+    // =========================================================================
+    // 신청 처리 (관리자)
+    // =========================================================================
+
+    /**
+     * 회사 추가 신청 승인
+     */
+    public function approveRequest(int $id): CompanyRequest
+    {
+        $userId = $this->apiUserId();
+        $request = CompanyRequest::findOrFail($id);
+
+        if (! $request->is_pending) {
+            throw new BadRequestHttpException(__('error.company.request_not_pending'));
+        }
+
+        return DB::transaction(function () use ($request, $userId) {
+            // 테넌트 생성
+            $tenantCode = $this->tenantService->generateTenantCode($request->company_name);
+            $tenant = Tenant::create([
+                'code' => $tenantCode,
+                'company_name' => $request->company_name,
+                'business_num' => $request->business_number,
+                'ceo_name' => $request->ceo_name,
+                'address' => $request->address,
+                'phone' => $request->phone,
+                'email' => $request->email,
+            ]);
+
+            // 신청자를 테넌트에 연결
+            UserTenant::create([
+                'user_id' => $request->user_id,
+                'tenant_id' => $tenant->id,
+                'is_active' => true,
+                'is_default' => true,
+                'joined_at' => now(),
+            ]);
+
+            // 신청 승인 처리
+            $request->approve($userId, $tenant->id);
+
+            return $request->fresh(['user', 'approver', 'createdTenant']);
+        });
+    }
+
+    /**
+     * 회사 추가 신청 반려
+     */
+    public function rejectRequest(int $id, ?string $reason = null): CompanyRequest
+    {
+        $userId = $this->apiUserId();
+        $request = CompanyRequest::findOrFail($id);
+
+        if (! $request->is_pending) {
+            throw new BadRequestHttpException(__('error.company.request_not_pending'));
+        }
+
+        $request->reject($userId, $reason);
+
+        return $request->fresh(['user', 'approver']);
+    }
+
+    // =========================================================================
+    // 내 신청 목록 (사용자용)
+    // =========================================================================
+
+    /**
+     * 내 회사 추가 신청 목록
+     */
+    public function getMyRequests(array $params): LengthAwarePaginator
+    {
+        $userId = $this->apiUserId();
+
+        $query = CompanyRequest::query()
+            ->where('user_id', $userId)
+            ->with(['approver:id,name,email', 'createdTenant:id,company_name,code']);
+
+        // 상태 필터
+        if (! empty($params['status'])) {
+            $query->ofStatus($params['status']);
+        }
+
+        // 정렬
+        $sortBy = $params['sort_by'] ?? 'created_at';
+        $sortDir = $params['sort_dir'] ?? 'desc';
+        $query->orderBy($sortBy, $sortDir);
+
+        $perPage = $params['per_page'] ?? 20;
+
+        return $query->paginate($perPage);
+    }
+}
diff --git a/app/Swagger/v1/CompanyApi.php b/app/Swagger/v1/CompanyApi.php
new file mode 100644
index 0000000..d7e05c1
--- /dev/null
+++ b/app/Swagger/v1/CompanyApi.php
@@ -0,0 +1,419 @@
+<?php
+
+namespace App\Swagger\v1;
+
+/**
+ * @OA\Tag(name="Companies", description="회사 관리")
+ *
+ * @OA\Schema(
+ *     schema="CompanyRequest",
+ *     type="object",
+ *     description="회사 추가 신청 정보",
+ *
+ *     @OA\Property(property="id", type="integer", example=1, description="신청 ID"),
+ *     @OA\Property(property="user_id", type="integer", example=1, description="신청자 ID"),
+ *     @OA\Property(property="business_number", type="string", example="1234567890", description="사업자등록번호"),
+ *     @OA\Property(property="formatted_business_number", type="string", example="123-45-67890", description="사업자등록번호 (포맷)"),
+ *     @OA\Property(property="company_name", type="string", example="주식회사 테스트", description="회사명"),
+ *     @OA\Property(property="ceo_name", type="string", nullable=true, example="홍길동", description="대표자명"),
+ *     @OA\Property(property="address", type="string", nullable=true, example="서울시 강남구 테헤란로 123", description="주소"),
+ *     @OA\Property(property="phone", type="string", nullable=true, example="02-1234-5678", description="전화번호"),
+ *     @OA\Property(property="email", type="string", nullable=true, example="contact@test.com", description="이메일"),
+ *     @OA\Property(property="status", type="string", enum={"pending","approved","rejected"}, example="pending", description="상태"),
+ *     @OA\Property(property="status_label", type="string", example="대기중", description="상태 라벨"),
+ *     @OA\Property(property="message", type="string", nullable=true, description="신청 메시지"),
+ *     @OA\Property(property="reject_reason", type="string", nullable=true, description="반려 사유"),
+ *     @OA\Property(property="barobill_response", type="object", nullable=true, description="바로빌 검증 응답"),
+ *     @OA\Property(property="approved_by", type="integer", nullable=true, description="승인/반려 처리자 ID"),
+ *     @OA\Property(property="created_tenant_id", type="integer", nullable=true, description="생성된 테넌트 ID"),
+ *     @OA\Property(property="processed_at", type="string", format="date-time", nullable=true, description="처리일시"),
+ *     @OA\Property(property="is_pending", type="boolean", example=true, description="대기중 여부"),
+ *     @OA\Property(property="is_approved", type="boolean", example=false, description="승인됨 여부"),
+ *     @OA\Property(property="is_rejected", type="boolean", example=false, description="반려됨 여부"),
+ *     @OA\Property(property="user", type="object", nullable=true,
+ *         @OA\Property(property="id", type="integer", example=1),
+ *         @OA\Property(property="name", type="string", example="홍길동"),
+ *         @OA\Property(property="email", type="string", example="user@example.com"),
+ *         description="신청자 정보"
+ *     ),
+ *     @OA\Property(property="approver", type="object", nullable=true,
+ *         @OA\Property(property="id", type="integer", example=1),
+ *         @OA\Property(property="name", type="string", example="관리자"),
+ *         @OA\Property(property="email", type="string", example="admin@example.com"),
+ *         description="처리자 정보"
+ *     ),
+ *     @OA\Property(property="created_tenant", type="object", nullable=true,
+ *         @OA\Property(property="id", type="integer", example=1),
+ *         @OA\Property(property="company_name", type="string", example="주식회사 테스트"),
+ *         @OA\Property(property="code", type="string", example="TEST0001"),
+ *         description="생성된 테넌트 정보"
+ *     ),
+ *     @OA\Property(property="created_at", type="string", format="date-time"),
+ *     @OA\Property(property="updated_at", type="string", format="date-time")
+ * )
+ *
+ * @OA\Schema(
+ *     schema="BusinessNumberCheckResponse",
+ *     type="object",
+ *     description="사업자등록번호 검증 결과",
+ *
+ *     @OA\Property(property="valid", type="boolean", example=true, description="유효 여부"),
+ *     @OA\Property(property="status", type="string", example="01", description="상태 코드"),
+ *     @OA\Property(property="status_label", type="string", example="사업중", description="상태 라벨"),
+ *     @OA\Property(property="corp_name", type="string", nullable=true, example="주식회사 테스트", description="회사명 (바로빌 조회)"),
+ *     @OA\Property(property="ceo_name", type="string", nullable=true, example="홍길동", description="대표자명 (바로빌 조회)"),
+ *     @OA\Property(property="message", type="string", example="유효한 사업자등록번호입니다.", description="결과 메시지"),
+ *     @OA\Property(property="already_exists", type="boolean", example=false, description="이미 등록된 회사 여부"),
+ *     @OA\Property(property="existing_company_name", type="string", nullable=true, description="이미 등록된 회사명")
+ * )
+ *
+ * @OA\Schema(
+ *     schema="CompanyRequestCreateRequest",
+ *     type="object",
+ *     required={"business_number", "company_name"},
+ *     description="회사 추가 신청 요청",
+ *
+ *     @OA\Property(property="business_number", type="string", example="1234567890", minLength=10, maxLength=13, description="사업자등록번호 (하이픈 포함/미포함 모두 가능)"),
+ *     @OA\Property(property="company_name", type="string", example="주식회사 테스트", maxLength=200, description="회사명"),
+ *     @OA\Property(property="ceo_name", type="string", example="홍길동", maxLength=50, nullable=true, description="대표자명"),
+ *     @OA\Property(property="address", type="string", example="서울시 강남구 테헤란로 123", maxLength=300, nullable=true, description="주소"),
+ *     @OA\Property(property="phone", type="string", example="02-1234-5678", maxLength=30, nullable=true, description="전화번호"),
+ *     @OA\Property(property="email", type="string", format="email", example="contact@test.com", maxLength=100, nullable=true, description="이메일"),
+ *     @OA\Property(property="message", type="string", example="신규 법인 등록 요청드립니다.", maxLength=1000, nullable=true, description="신청 메시지")
+ * )
+ *
+ * @OA\Schema(
+ *     schema="CompanyRequestActionRequest",
+ *     type="object",
+ *     description="회사 추가 신청 처리 요청",
+ *
+ *     @OA\Property(property="reason", type="string", example="서류 미비로 반려합니다.", maxLength=500, nullable=true, description="처리 사유 (반려 시 필수)")
+ * )
+ *
+ * @OA\Schema(
+ *     schema="CompanyRequestPagination",
+ *     type="object",
+ *     description="회사 추가 신청 목록 (페이지네이션)",
+ *
+ *     @OA\Property(property="data", type="array", @OA\Items(ref="#/components/schemas/CompanyRequest")),
+ *     @OA\Property(property="links", type="object",
+ *         @OA\Property(property="first", type="string"),
+ *         @OA\Property(property="last", type="string"),
+ *         @OA\Property(property="prev", type="string", nullable=true),
+ *         @OA\Property(property="next", type="string", nullable=true)
+ *     ),
+ *     @OA\Property(property="meta", type="object",
+ *         @OA\Property(property="current_page", type="integer", example=1),
+ *         @OA\Property(property="from", type="integer", example=1),
+ *         @OA\Property(property="last_page", type="integer", example=1),
+ *         @OA\Property(property="per_page", type="integer", example=20),
+ *         @OA\Property(property="to", type="integer", example=5),
+ *         @OA\Property(property="total", type="integer", example=5)
+ *     )
+ * )
+ */
+class CompanyApi
+{
+    /**
+     * @OA\Post(
+     *     path="/api/v1/companies/check",
+     *     operationId="checkBusinessNumber",
+     *     tags={"Companies"},
+     *     summary="사업자등록번호 유효성 검사",
+     *     description="사업자등록번호의 유효성을 검사합니다. 바로빌 API를 통해 휴폐업 여부를 확인하고, 이미 등록된 회사인지 확인합니다.",
+     *     security={{"ApiKeyAuth": {}}, {"BearerAuth": {}}},
+     *
+     *     @OA\RequestBody(
+     *         required=true,
+     *         description="사업자등록번호",
+     *
+     *         @OA\JsonContent(
+     *             required={"business_number"},
+     *
+     *             @OA\Property(property="business_number", type="string", example="1234567890", description="사업자등록번호 (10자리, 하이픈 제거)")
+     *         )
+     *     ),
+     *
+     *     @OA\Response(
+     *         response=200,
+     *         description="검증 결과",
+     *
+     *         @OA\JsonContent(
+     *             type="object",
+     *
+     *             @OA\Property(property="success", type="boolean", example=true),
+     *             @OA\Property(property="message", type="string", example="검증이 완료되었습니다."),
+     *             @OA\Property(property="data", ref="#/components/schemas/BusinessNumberCheckResponse")
+     *         )
+     *     ),
+     *
+     *     @OA\Response(response=400, description="잘못된 요청"),
+     *     @OA\Response(response=401, description="인증 실패")
+     * )
+     */
+    public function check() {}
+
+    /**
+     * @OA\Post(
+     *     path="/api/v1/companies/request",
+     *     operationId="createCompanyRequest",
+     *     tags={"Companies"},
+     *     summary="회사 추가 신청",
+     *     description="새로운 회사 추가를 신청합니다. 관리자 승인 후 테넌트가 생성됩니다.",
+     *     security={{"ApiKeyAuth": {}}, {"BearerAuth": {}}},
+     *
+     *     @OA\RequestBody(
+     *         required=true,
+     *         description="회사 정보",
+     *
+     *         @OA\JsonContent(ref="#/components/schemas/CompanyRequestCreateRequest")
+     *     ),
+     *
+     *     @OA\Response(
+     *         response=201,
+     *         description="신청 완료",
+     *
+     *         @OA\JsonContent(
+     *             type="object",
+     *
+     *             @OA\Property(property="success", type="boolean", example=true),
+     *             @OA\Property(property="message", type="string", example="회사 추가 신청이 완료되었습니다."),
+     *             @OA\Property(property="data", ref="#/components/schemas/CompanyRequest")
+     *         )
+     *     ),
+     *
+     *     @OA\Response(response=400, description="잘못된 요청 (중복 신청, 이미 등록된 회사 등)"),
+     *     @OA\Response(response=401, description="인증 실패")
+     * )
+     */
+    public function request() {}
+
+    /**
+     * @OA\Get(
+     *     path="/api/v1/companies/requests",
+     *     operationId="getCompanyRequests",
+     *     tags={"Companies"},
+     *     summary="회사 추가 신청 목록 (관리자용)",
+     *     description="회사 추가 신청 목록을 조회합니다. 관리자 권한이 필요합니다.",
+     *     security={{"ApiKeyAuth": {}}, {"BearerAuth": {}}},
+     *
+     *     @OA\Parameter(name="status", in="query", description="상태 필터",
+     *
+     *         @OA\Schema(type="string", enum={"pending","approved","rejected"})
+     *     ),
+     *
+     *     @OA\Parameter(name="search", in="query", description="검색어 (사업자번호, 회사명, 신청자명)",
+     *
+     *         @OA\Schema(type="string")
+     *     ),
+     *
+     *     @OA\Parameter(name="start_date", in="query", description="시작일",
+     *
+     *         @OA\Schema(type="string", format="date")
+     *     ),
+     *
+     *     @OA\Parameter(name="end_date", in="query", description="종료일",
+     *
+     *         @OA\Schema(type="string", format="date")
+     *     ),
+     *
+     *     @OA\Parameter(name="sort_by", in="query", description="정렬 기준",
+     *
+     *         @OA\Schema(type="string", enum={"created_at","company_name","status","processed_at"})
+     *     ),
+     *
+     *     @OA\Parameter(name="sort_dir", in="query", description="정렬 방향",
+     *
+     *         @OA\Schema(type="string", enum={"asc","desc"})
+     *     ),
+     *
+     *     @OA\Parameter(name="per_page", in="query", description="페이지당 항목 수",
+     *
+     *         @OA\Schema(type="integer", minimum=1, maximum=100, default=20)
+     *     ),
+     *
+     *     @OA\Parameter(name="page", in="query", description="페이지 번호",
+     *
+     *         @OA\Schema(type="integer", minimum=1)
+     *     ),
+     *
+     *     @OA\Response(
+     *         response=200,
+     *         description="신청 목록",
+     *
+     *         @OA\JsonContent(
+     *             type="object",
+     *
+     *             @OA\Property(property="success", type="boolean", example=true),
+     *             @OA\Property(property="message", type="string", example="조회되었습니다."),
+     *             @OA\Property(property="data", ref="#/components/schemas/CompanyRequestPagination")
+     *         )
+     *     ),
+     *
+     *     @OA\Response(response=401, description="인증 실패"),
+     *     @OA\Response(response=403, description="권한 없음")
+     * )
+     */
+    public function requests() {}
+
+    /**
+     * @OA\Get(
+     *     path="/api/v1/companies/requests/{id}",
+     *     operationId="getCompanyRequest",
+     *     tags={"Companies"},
+     *     summary="회사 추가 신청 상세",
+     *     description="회사 추가 신청 상세 정보를 조회합니다.",
+     *     security={{"ApiKeyAuth": {}}, {"BearerAuth": {}}},
+     *
+     *     @OA\Parameter(name="id", in="path", required=true, description="신청 ID",
+     *
+     *         @OA\Schema(type="integer")
+     *     ),
+     *
+     *     @OA\Response(
+     *         response=200,
+     *         description="신청 상세",
+     *
+     *         @OA\JsonContent(
+     *             type="object",
+     *
+     *             @OA\Property(property="success", type="boolean", example=true),
+     *             @OA\Property(property="message", type="string", example="조회되었습니다."),
+     *             @OA\Property(property="data", ref="#/components/schemas/CompanyRequest")
+     *         )
+     *     ),
+     *
+     *     @OA\Response(response=401, description="인증 실패"),
+     *     @OA\Response(response=404, description="신청 없음")
+     * )
+     */
+    public function showRequest() {}
+
+    /**
+     * @OA\Post(
+     *     path="/api/v1/companies/requests/{id}/approve",
+     *     operationId="approveCompanyRequest",
+     *     tags={"Companies"},
+     *     summary="회사 추가 신청 승인",
+     *     description="회사 추가 신청을 승인합니다. 승인 시 새로운 테넌트가 생성되고, 신청자가 해당 테넌트에 연결됩니다.",
+     *     security={{"ApiKeyAuth": {}}, {"BearerAuth": {}}},
+     *
+     *     @OA\Parameter(name="id", in="path", required=true, description="신청 ID",
+     *
+     *         @OA\Schema(type="integer")
+     *     ),
+     *
+     *     @OA\Response(
+     *         response=200,
+     *         description="승인 완료",
+     *
+     *         @OA\JsonContent(
+     *             type="object",
+     *
+     *             @OA\Property(property="success", type="boolean", example=true),
+     *             @OA\Property(property="message", type="string", example="승인되었습니다."),
+     *             @OA\Property(property="data", ref="#/components/schemas/CompanyRequest")
+     *         )
+     *     ),
+     *
+     *     @OA\Response(response=400, description="잘못된 요청 (이미 처리됨 등)"),
+     *     @OA\Response(response=401, description="인증 실패"),
+     *     @OA\Response(response=403, description="권한 없음"),
+     *     @OA\Response(response=404, description="신청 없음")
+     * )
+     */
+    public function approve() {}
+
+    /**
+     * @OA\Post(
+     *     path="/api/v1/companies/requests/{id}/reject",
+     *     operationId="rejectCompanyRequest",
+     *     tags={"Companies"},
+     *     summary="회사 추가 신청 반려",
+     *     description="회사 추가 신청을 반려합니다.",
+     *     security={{"ApiKeyAuth": {}}, {"BearerAuth": {}}},
+     *
+     *     @OA\Parameter(name="id", in="path", required=true, description="신청 ID",
+     *
+     *         @OA\Schema(type="integer")
+     *     ),
+     *
+     *     @OA\RequestBody(
+     *         description="반려 사유",
+     *
+     *         @OA\JsonContent(ref="#/components/schemas/CompanyRequestActionRequest")
+     *     ),
+     *
+     *     @OA\Response(
+     *         response=200,
+     *         description="반려 완료",
+     *
+     *         @OA\JsonContent(
+     *             type="object",
+     *
+     *             @OA\Property(property="success", type="boolean", example=true),
+     *             @OA\Property(property="message", type="string", example="반려되었습니다."),
+     *             @OA\Property(property="data", ref="#/components/schemas/CompanyRequest")
+     *         )
+     *     ),
+     *
+     *     @OA\Response(response=400, description="잘못된 요청 (이미 처리됨 등)"),
+     *     @OA\Response(response=401, description="인증 실패"),
+     *     @OA\Response(response=403, description="권한 없음"),
+     *     @OA\Response(response=404, description="신청 없음")
+     * )
+     */
+    public function reject() {}
+
+    /**
+     * @OA\Get(
+     *     path="/api/v1/companies/my-requests",
+     *     operationId="getMyCompanyRequests",
+     *     tags={"Companies"},
+     *     summary="내 회사 추가 신청 목록",
+     *     description="현재 사용자의 회사 추가 신청 목록을 조회합니다.",
+     *     security={{"ApiKeyAuth": {}}, {"BearerAuth": {}}},
+     *
+     *     @OA\Parameter(name="status", in="query", description="상태 필터",
+     *
+     *         @OA\Schema(type="string", enum={"pending","approved","rejected"})
+     *     ),
+     *
+     *     @OA\Parameter(name="sort_by", in="query", description="정렬 기준",
+     *
+     *         @OA\Schema(type="string", enum={"created_at","company_name","status","processed_at"})
+     *     ),
+     *
+     *     @OA\Parameter(name="sort_dir", in="query", description="정렬 방향",
+     *
+     *         @OA\Schema(type="string", enum={"asc","desc"})
+     *     ),
+     *
+     *     @OA\Parameter(name="per_page", in="query", description="페이지당 항목 수",
+     *
+     *         @OA\Schema(type="integer", minimum=1, maximum=100, default=20)
+     *     ),
+     *
+     *     @OA\Parameter(name="page", in="query", description="페이지 번호",
+     *
+     *         @OA\Schema(type="integer", minimum=1)
+     *     ),
+     *
+     *     @OA\Response(
+     *         response=200,
+     *         description="내 신청 목록",
+     *
+     *         @OA\JsonContent(
+     *             type="object",
+     *
+     *             @OA\Property(property="success", type="boolean", example=true),
+     *             @OA\Property(property="message", type="string", example="조회되었습니다."),
+     *             @OA\Property(property="data", ref="#/components/schemas/CompanyRequestPagination")
+     *         )
+     *     ),
+     *
+     *     @OA\Response(response=401, description="인증 실패")
+     * )
+     */
+    public function myRequests() {}
+}
diff --git a/database/migrations/2025_12_22_100001_create_company_requests_table.php b/database/migrations/2025_12_22_100001_create_company_requests_table.php
new file mode 100644
index 0000000..5ee0d99
--- /dev/null
+++ b/database/migrations/2025_12_22_100001_create_company_requests_table.php
@@ -0,0 +1,45 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('company_requests', function (Blueprint $table) {
+            $table->id();
+            $table->unsignedBigInteger('user_id')->comment('신청자 ID');
+            $table->string('business_number', 20)->comment('사업자등록번호');
+            $table->string('company_name', 200)->comment('회사명');
+            $table->string('ceo_name', 50)->nullable()->comment('대표자명');
+            $table->string('address', 300)->nullable()->comment('주소');
+            $table->string('phone', 30)->nullable()->comment('전화번호');
+            $table->string('email', 100)->nullable()->comment('이메일');
+            $table->string('status', 20)->default('pending')->comment('상태 (pending, approved, rejected)');
+            $table->text('message')->nullable()->comment('신청 메시지');
+            $table->text('reject_reason')->nullable()->comment('반려 사유');
+            $table->json('barobill_response')->nullable()->comment('바로빌 검증 응답');
+            $table->unsignedBigInteger('approved_by')->nullable()->comment('승인/반려 처리자');
+            $table->unsignedBigInteger('created_tenant_id')->nullable()->comment('생성된 테넌트 ID');
+            $table->timestamp('processed_at')->nullable()->comment('처리일시');
+            $table->timestamps();
+
+            $table->index('user_id', 'idx_company_requests_user_id');
+            $table->index('business_number', 'idx_company_requests_business_number');
+            $table->index('status', 'idx_company_requests_status');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('company_requests');
+    }
+};
diff --git a/lang/ko/error.php b/lang/ko/error.php
index 687c512..fa956e5 100644
--- a/lang/ko/error.php
+++ b/lang/ko/error.php
@@ -312,4 +312,13 @@
         'not_found' => '내보내기 요청을 찾을 수 없습니다.',
         'failed' => '내보내기 처리 중 오류가 발생했습니다.',
     ],
+
+    // 회사 추가 신청 관련
+    'company' => [
+        'not_found' => '회사 추가 신청을 찾을 수 없습니다.',
+        'already_pending' => '이미 대기 중인 동일 사업자등록번호 신청이 있습니다.',
+        'already_processed' => '이미 처리된 신청입니다.',
+        'tenant_creation_failed' => '테넌트 생성에 실패했습니다.',
+        'invalid_business_number' => '유효하지 않은 사업자등록번호입니다.',
+    ],
 ];
diff --git a/lang/ko/message.php b/lang/ko/message.php
index 1434784..b7fdcec 100644
--- a/lang/ko/message.php
+++ b/lang/ko/message.php
@@ -367,4 +367,12 @@
         'cancelled' => '결제가 취소되었습니다.',
         'refunded' => '환불이 완료되었습니다.',
     ],
+
+    // 회사 추가 신청 관리
+    'company' => [
+        'checked' => '사업자등록번호 확인이 완료되었습니다.',
+        'request_created' => '회사 추가 신청이 접수되었습니다.',
+        'request_approved' => '회사 추가 신청이 승인되었습니다.',
+        'request_rejected' => '회사 추가 신청이 반려되었습니다.',
+    ],
 ];
diff --git a/routes/api.php b/routes/api.php
index 30d1618..ec18888 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -21,6 +21,7 @@
 use App\Http\Controllers\Api\V1\ClassificationController;
 use App\Http\Controllers\Api\V1\ClientController;
 use App\Http\Controllers\Api\V1\ClientGroupController;
+use App\Http\Controllers\Api\V1\CompanyController;
 use App\Http\Controllers\Api\V1\CommonController;
 use App\Http\Controllers\Api\V1\DashboardController;
 use App\Http\Controllers\Api\V1\DepartmentController;
@@ -476,6 +477,17 @@
             Route::get('/{id}/statement', [PaymentController::class, 'statement'])->whereNumber('id')->name('v1.payments.statement');
         });
 
+        // Company API (회사 추가 관리)
+        Route::prefix('companies')->group(function () {
+            Route::post('/check', [CompanyController::class, 'check'])->name('v1.companies.check');                   // 사업자등록번호 검증
+            Route::post('/request', [CompanyController::class, 'request'])->name('v1.companies.request');             // 회사 추가 신청
+            Route::get('/requests', [CompanyController::class, 'requests'])->name('v1.companies.requests.index');     // 신청 목록 (관리자)
+            Route::get('/requests/{id}', [CompanyController::class, 'showRequest'])->whereNumber('id')->name('v1.companies.requests.show'); // 신청 상세
+            Route::post('/requests/{id}/approve', [CompanyController::class, 'approve'])->whereNumber('id')->name('v1.companies.requests.approve'); // 승인
+            Route::post('/requests/{id}/reject', [CompanyController::class, 'reject'])->whereNumber('id')->name('v1.companies.requests.reject'); // 반려
+            Route::get('/my-requests', [CompanyController::class, 'myRequests'])->name('v1.companies.my-requests');   // 내 신청 목록
+        });
+
         // Sale API (매출 관리)
         Route::prefix('sales')->group(function () {
             Route::get('', [SaleController::class, 'index'])->name('v1.sales.index');